Merge pull request 'The image build context is the module's own directory, so a Dockerfile in a subdirectory builds (issue 1703)' (#512) from fix/1703-image-context into main

Main's #508 (the binary refusal) pinned mesh-sdk fe11db9; 805b4d9 is the capacity work merged with
sdk main, so it holds both.

checks/failurekit/failurekit.go

@@ -1,115 +0,0 @@
-// Package failurekit refuses a build module whose tests do not run mesh-sdk's conformance kit (issue 1901, its thorough
-// fix): a module that claims a node-build-* seat and serves a test step must hold a test that calls conformance.Run, so
-// its parse of the test runner's output is held to the failure contract (a failing test named with its cause, never a
-// passing line in its place). A build module with no test step (mesh-build-image builds images and runs no tests) is
-// exempt, and said so.
-package failurekit
-
-import (
-	"encoding/json"
-	"fmt"
-	"io/fs"
-	"os"
-	"path/filepath"
-	"sort"
-	"strings"
-)
-
-// Judged is what the check says of one build module: Refused says why it fails the check, "" when it passes; Exempt
-// says why the kit does not apply.
-type Judged struct {
-	Module, Refused, Exempt string
-}
-
-type manifest struct {
-	Claims []struct {
-		Name string `json:"name"`
-	} `json:"claims"`
-	Tools []json.RawMessage `json:"tools"`
-}
-
-// Judge reads every modules/<m>/module.json of the catalogue at root and judges each module that claims a node-build-*
-// seat.
-func Judge(root string) ([]Judged, error) {
-	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
-	if err != nil {
-		return nil, err
-	}
-	sort.Strings(manifests)
-	var out []Judged
-	for _, p := range manifests {
-		raw, err := os.ReadFile(p)
-		if err != nil {
-			return nil, err
-		}
-		var m manifest
-		if err := json.Unmarshal(raw, &m); err != nil {
-			return nil, fmt.Errorf("%s: %w", p, err)
-		}
-		seat := ""
-		for _, c := range m.Claims {
-			if strings.HasPrefix(c.Name, "node-build-") {
-				seat = c.Name
-			}
-		}
-		if seat == "" {
-			continue
-		}
-		dir := filepath.Dir(p)
-		j := Judged{Module: filepath.Base(dir)}
-		test := testTool(m.Tools)
-		switch {
-		case test == "":
-			j.Exempt = fmt.Sprintf("it claims %s and serves no test step", seat)
-		default:
-			runs, err := runsTheKit(dir)
-			if err != nil {
-				return nil, err
-			}
-			if !runs {
-				j.Refused = fmt.Sprintf("it claims %s and serves the test step %s, and no test of it calls conformance.Run "+
-					"(mesh-sdk go/buildstep/conformance): run the kit with the module's own parse path (issue 1901)", seat, test)
-			}
-		}
-		out = append(out, j)
-	}
-	return out, nil
-}
-
-// testTool is the name of the module's test step tool (<prefix>_test), or "".
-func testTool(tools []json.RawMessage) string {
-	for _, raw := range tools {
-		var name string
-		if json.Unmarshal(raw, &name) != nil {
-			var t struct {
-				Name string `json:"name"`
-			}
-			if json.Unmarshal(raw, &t) != nil {
-				continue
-			}
-			name = t.Name
-		}
-		if strings.HasSuffix(name, "_test") {
-			return name
-		}
-	}
-	return ""
-}
-
-// runsTheKit says a _test.go file under dir calls conformance.Run.
-func runsTheKit(dir string) (bool, error) {
-	found := false
-	err := filepath.WalkDir(dir, func(p string, d fs.DirEntry, err error) error {
-		if err != nil || found || d.IsDir() || !strings.HasSuffix(p, "_test.go") {
-			return err
-		}
-		raw, err := os.ReadFile(p)
-		if err != nil {
-			return err
-		}
-		found = strings.Contains(string(raw), "conformance.Run(") &&
-			strings.Contains(string(raw), `"git.novox.be/novox/mesh-sdk/go/buildstep/conformance"`)
-		return nil
-	})
-	return found, err
-}

checks/failurekit/failurekit_test.go

@@ -1,70 +0,0 @@
-package failurekit
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-)
-
-// 1901/AC7: a build module with a test step and no kit is refused, one that runs the kit passes, one with no test step is
-// exempt, and a module that claims no node-build-* seat is not judged.
-func TestABuildModuleWithATestStepMustRunTheKit(t *testing.T) {
-	root := t.TempDir()
-	kit := "package main\n\nimport \"git.novox.be/novox/mesh-sdk/go/buildstep/conformance\"\n\nfunc TestKit(t *testing.T) { conformance.Run(t, conformance.GoTest, nil) }\n"
-	for path, body := range map[string]string{
-		"modules/a/module.json":         `{"claims":[{"name":"node-build-a"}],"tools":["build_a_fetch","build_a_test"]}`,
-		"modules/a/cmd/a/check_test.go": "package main\n",
-		"modules/b/module.json":         `{"claims":[{"name":"node-build-b"}],"tools":[{"name":"build_b_test"}]}`,
-		"modules/b/cmd/b/kit_test.go":   kit,
-		"modules/c/module.json":         `{"claims":[{"name":"node-build-c"}],"tools":["build_c_build"]}`,
-		"modules/d/module.json":         `{"claims":[{"name":"other"}],"tools":["d_test"]}`,
-		"modules/e/module.json":         `{"claims":[{"name":"node-build-e"}],"tools":["build_e_test"]}`,
-		"modules/e/cmd/e/kit.go":        kit, // not a test file
-	} {
-		p := filepath.Join(root, path)
-		if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
-			t.Fatal(err)
-		}
-		if err := os.WriteFile(p, []byte(body), 0o644); err != nil {
-			t.Fatal(err)
-		}
-	}
-	got, err := Judge(root)
-	if err != nil {
-		t.Fatal(err)
-	}
-	want := map[string]string{"a": "refused", "b": "passes", "c": "exempt", "e": "refused"}
-	if len(got) != len(want) {
-		t.Fatalf("judged %+v, want a, b, c and e", got)
-	}
-	for _, j := range got {
-		is := "passes"
-		if j.Refused != "" {
-			is = "refused"
-		} else if j.Exempt != "" {
-			is = "exempt"
-		}
-		if is != want[j.Module] {
-			t.Errorf("%s %s (%+v), want it %s", j.Module, is, j, want[j.Module])
-		}
-	}
-}
-
-// Every build module of this catalogue with a test step runs the kit.
-func TestTheCataloguesBuildModulesRunTheKit(t *testing.T) {
-	got, err := Judge(filepath.Join("..", ".."))
-	if err != nil {
-		t.Fatal(err)
-	}
-	if len(got) == 0 {
-		t.Fatal("no module claims a node-build-* seat: the check reads the wrong tree")
-	}
-	for _, j := range got {
-		switch {
-		case j.Refused != "":
-			t.Errorf("%s: %s", j.Module, j.Refused)
-		case j.Exempt != "":
-			t.Logf("%s is exempt: %s", j.Module, j.Exempt)
-		}
-	}
-}

checks/failurekit/go.mod

@@ -1,3 +0,0 @@
-module git.novox.be/novox/mesh-catalog/checks/failurekit
-
-go 1.22

checks/failurekit/reads-outside

@@ -1 +0,0 @@
-These tests read files outside this directory (the whole catalogue, the repository, or its root files): mesh-build-go never keeps this package's verdict (issue 1935).

modules/gitea/client.ts

@@ -174,8 +174,27 @@ function ignoreSecretSetting(cfg: Record<string, unknown>, key: string): void {
   console.error(`the setting ${key} is ignored: it comes from the vault`);
 }
 
+/** How long the forge may take to answer one request before it is cut and said (novox/hq issue 1577: a request for a 5 MB
+ *  file never ended, and every read through the module timed out behind it). */
+export const FORGE_REQUEST_TIMEOUT_MS = 20_000;
+
+/** The most a tool's answer carries of one file: the bus's message bound is 1 MiB and a file travels as text (issue 1577). */
+export const MAX_FILE_BYTES = 512 * 1024;
+
+/** One request to the forge, cut at the limit and failing loud naming the request. */
+async function timedFetch(url: string, init: RequestInit, label: string, timeoutMs: number): Promise<Response> {
+  try {
+    return await fetch(url, { ...init, signal: init.signal ? AbortSignal.any([init.signal, AbortSignal.timeout(timeoutMs)]) : AbortSignal.timeout(timeoutMs) });
+  } catch (err) {
+    if (err instanceof Error && err.name === "TimeoutError") throw new Error(`Gitea API ${label}: no answer in ${timeoutMs / 1000} s, the request was cut`);
+    throw err;
+  }
+}
+
 export class GiteaClient {
   readonly baseUrl: string;
+  /** The limit of one request; a test sets it short. */
+  requestTimeoutMs = FORGE_REQUEST_TIMEOUT_MS;
   private readonly tokens: TokenSource;
 
   /** A token given as a string is one somebody configured; a source decides for itself (token.ts). */
@@ -230,14 +249,14 @@ export class GiteaClient {
 
   private send(path: string, options: RequestInit, token: string): Promise<Response> {
     checkSentPath(path);
-    return fetch(`${this.baseUrl}/api/v1${path}`, {
+    return timedFetch(`${this.baseUrl}/api/v1${path}`, {
       ...options,
       headers: {
         "Content-Type": "application/json",
         Authorization: `token ${token}`,
         ...(options.headers as Record<string, string> | undefined),
       },
-    });
+    }, `${options.method ?? "GET"} ${path}`, this.requestTimeoutMs);
   }
 
   /** Generic authenticated API call — the escape hatch for endpoints without a dedicated method.
@@ -771,6 +790,22 @@ export class GiteaClient {
   /** One file's contents at a ref (default the repository's default branch), decoded. */
   async getFile(owner: string, repo: string, path: string, ref?: string): Promise<{ path: string; ref?: string; sha: string; size: number; content: string }> {
     const qs = ref ? `?ref=${encodeURIComponent(ref)}` : "";
+    // The size first, from the file's directory listing, which carries no content: a file over what an answer can carry is
+    // refused without its body being fetched (issue 1577). A file the listing does not show is asked for as before.
+    const clean = path.replace(/^\/+|\/+$/g, "");
+    pathSegments("file path", clean); // a path that is another path or user is refused before anything reaches the forge
+    const slash = clean.lastIndexOf("/");
+    const dir = slash < 0 ? "" : clean.slice(0, slash);
+    let listing: any[] | null = null;
+    try {
+      listing = await this.request<any[]>(`${repoPath(owner, repo)}/contents${dir ? "/" + pathSegments("file path", dir) : ""}${qs}`);
+    } catch (err) {
+      if (!(err instanceof Error) || !/: 404 /.test(err.message)) throw err;
+    }
+    const entry = Array.isArray(listing) ? listing.find((e) => e?.path === clean) : undefined;
+    if (entry && Number(entry.size) > MAX_FILE_BYTES) {
+      throw new Error(`the file is ${Number(entry.size)} bytes, over the ${MAX_FILE_BYTES / 1024} KiB a tool answer can carry; read it from a clone`);
+    }
     const f = await this.request<any>(`${repoPath(owner, repo)}/contents/${pathSegments("file path", path.replace(/^\/+|\/+$/g, ""))}${qs}`);
     if (!f || f.type !== "file") throw new Error(`Gitea API: ${path} is not a file`);
     const content = f.encoding === "base64" ? Buffer.from(String(f.content ?? ""), "base64").toString("utf8") : String(f.content ?? "");
@@ -940,14 +975,14 @@ export class GiteaAdmin {
    *  throwing on it — the caller decides which non-2xx codes are idempotent successes. Only an
    *  unexpected status becomes an error, and only where the caller says so. */
   private async request(path: string, options: RequestInit = {}): Promise<AdminResponse> {
-    const res = await fetch(`${this.baseUrl}/api/v1${path}`, {
+    const res = await timedFetch(`${this.baseUrl}/api/v1${path}`, {
       ...options,
       headers: {
         "Content-Type": "application/json",
         Authorization: this.authorization,
         ...(options.headers as Record<string, string> | undefined),
       },
-    });
+    }, `${options.method ?? "GET"} ${path}`, FORGE_REQUEST_TIMEOUT_MS);
     const text = await res.text();
     let body: any = null;
     if (text) {
@@ -1047,12 +1082,19 @@ export class GiteaAdmin {
     return true;
   }
 
-  /** What the forge itself says an account may do on a repository: none, read, write, admin or owner. */
+  /** What the forge gives an account on a repository, effective: none, read, write, admin or owner. It is the repository as
+   *  that account sees it (the site administrator acts as the account with `sudo`), so access through an organisation's team
+   *  counts. The collaborator endpoint is not used: it names only a collaborator's own permission, and says "read" of an
+   *  account that writes through a team (novox/hq issue 1945). */
   async repositoryPermission(owner: string, repo: string, user: string): Promise<string> {
-    const path = `${repoPath(owner, repo)}/collaborators/${encodeURIComponent(user)}/permission`;
+    const path = `${repoPath(owner, repo)}?sudo=${encodeURIComponent(user)}`;
     const res = await this.request(path);
+    if (res.status === 404) return "none";
     if (res.status !== 200) GiteaAdmin.fail(path, res);
-    return String(res.body?.permission ?? "none");
+    const p = res.body?.permissions;
+    if (p?.admin === true) return res.body?.owner?.login === user ? "owner" : "admin";
+    if (p?.push === true) return "write";
+    return p?.pull === true ? "read" : "none";
   }
 
   /** Make an account a collaborator of a repository that reads only. The forge asks a repository's administrator for
@@ -1067,6 +1109,38 @@ export class GiteaAdmin {
     await this.addCollaborator(owner, repo, user, "write");
   }
 
+  /** The rule that applies to main in a repository, as its administrator reads it: a rule named main, else the first glob
+   *  rule covering main; null when none does. With the administrator's login. */
+  async mainRule(owner: string, repo: string): Promise<BranchProtection | null> {
+    const rules = await this.branchProtections(owner, repo);
+    return rules.find((r) => (r.rule_name ?? r.branch_name) === MAIN_BRANCH)
+      ?? rules.find((r) => ruleCovers(String(r.rule_name ?? r.branch_name ?? ""), MAIN_BRANCH)) ?? null;
+  }
+
+  /** Put an account on main's merge whitelist in a repository of a user, and nothing else (the operator, 2026-10-26:
+   *  write, the rule untouched). Only an existing rule whose merge whitelist is on is changed, and only its whitelist: the
+   *  account is added to the logins already there. Push, status checks, approvals and the administrator override stay as
+   *  the operator set them; with no rule, or the whitelist off, nothing is written (whoever writes may merge). Read back:
+   *  the forge drops a whitelist login that cannot write the repository and still answers success, so a whitelist read back
+   *  without the account fails loud. Answers the rule as the forge holds it after. With the administrator's login. */
+  async ensureMergerListed(owner: string, repo: string, account: string): Promise<{ changed: boolean; rule: BranchProtection | null }> {
+    const rule = await this.mainRule(owner, repo);
+    const listed = rule?.merge_whitelist_usernames ?? [];
+    if (!rule || rule.enable_merge_whitelist !== true || listed.includes(account)) return { changed: false, rule };
+    const name = String(rule.rule_name ?? rule.branch_name);
+    const path = `${repoPath(owner, repo)}/branch_protections/${encodeURIComponent(name)}`;
+    const res = await this.request(path, { method: "PATCH", body: JSON.stringify({ merge_whitelist_usernames: [...listed, account] }) });
+    if (res.status !== 200) GiteaAdmin.fail(path, res);
+    const after = (await this.branchProtections(owner, repo)).find((r) => (r.rule_name ?? r.branch_name) === name);
+    if (!after) throw new Error(`main's rule ${name} of ${owner}/${repo} was written, but the forge does not list it`);
+    const held = after.merge_whitelist_usernames ?? [];
+    if (after.enable_merge_whitelist === true && !held.includes(account)) {
+      throw new Error(`${account} was added to the merge whitelist of main's rule ${name} of ${owner}/${repo}, but the forge ` +
+        `holds [${held.join(", ")}]: it drops a login that cannot write the repository`);
+    }
+    return { changed: true, rule: after };
+  }
+
   private async addCollaborator(owner: string, repo: string, user: string, permission: "read" | "write"): Promise<void> {
     const path = `${repoPath(owner, repo)}/collaborators/${encodeURIComponent(user)}`;
     const res = await this.request(path, { method: "PUT", body: JSON.stringify({ permission }) });
@@ -1192,9 +1266,9 @@ export class GiteaAdmin {
    * other answer rejects (novox/hq issue 120).
    */
   async holdsTeamMember(org: string, team: string, username: string, password: string): Promise<boolean> {
-    const me = await fetch(`${this.baseUrl}/api/v1/user`, {
+    const me = await timedFetch(`${this.baseUrl}/api/v1/user`, {
       headers: { Authorization: "Basic " + Buffer.from(`${username}:${password}`).toString("base64") },
-    });
+    }, "GET /user", FORGE_REQUEST_TIMEOUT_MS);
     if (me.status === 401 || me.status === 403) return false;
     if (me.status !== 200) throw new Error(`Gitea GET /user as ${username}: ${me.status}`);
     const teams = await this.request(`/orgs/${encodeURIComponent(org)}/teams?limit=50`);

modules/gitea/test/guard.test.ts

@@ -640,6 +640,7 @@ test("no tool's caller text becomes another path or another user: `..` and `?sud
   await tool("gitea_delete_branch").run({ ...repo, branch: "feat/x" });
   await tool("gitea_get_file").run({ ...repo, path: "modules/gitea/module.json" }).catch(() => undefined);
   assert.deepEqual(state.asked, ["DELETE /repos/novox/mesh-catalog/branches/feat/x",
+    "GET /repos/novox/mesh-catalog/contents/modules/gitea", // the file's size first (issue 1577)
     "GET /repos/novox/mesh-catalog/contents/modules/gitea/module.json"]);
 });
 

modules/gitea/test/paging.test.ts

@@ -90,3 +90,48 @@ test("a pass pages until it reaches back past its floor, and no further", async
     server.close();
   }
 });
+
+// **One forge request never holds the others, and a file too big for an answer is not downloaded** (novox/hq issue 1577): a
+// request for a 4.9 MB file never ended and every read through the module timed out behind it.
+test("a request the forge never answers is cut at the limit and says which request", async () => {
+  const { GiteaClient } = await import("../client.ts");
+  const server = createServer((req) => { if (!req.url?.includes("fast")) return; });
+  await new Promise<void>((r) => server.listen(0, r));
+  const client = new GiteaClient(`http://127.0.0.1:${(server.address() as any).port}`, "t");
+  client.requestTimeoutMs = 150;
+  try {
+    const started = Date.now();
+    await assert.rejects(client.api("/repos/novox/hq/pulls"), /Gitea API GET \/repos\/novox\/hq\/pulls: no answer in 0\.15 s/);
+    assert.ok(Date.now() - started < 3000);
+  } finally {
+    server.closeAllConnections();
+    await new Promise<void>((r) => server.close(() => r()));
+  }
+});
+
+test("a file over 512 KiB is refused from its directory listing, and its body is never asked for", async () => {
+  const { GiteaClient } = await import("../client.ts");
+  const asked: string[] = [];
+  const server = createServer((req, res) => {
+    asked.push(req.url ?? "");
+    res.setHeader("Content-Type", "application/json");
+    if (req.url?.startsWith("/api/v1/repos/novox/hq/contents/bin?")) {
+      return res.end(JSON.stringify([{ path: "bin/big", type: "file", size: 5_000_000 }, { path: "bin/small", type: "file", size: 5 }]));
+    }
+    if (req.url?.startsWith("/api/v1/repos/novox/hq/contents/bin/small")) {
+      return res.end(JSON.stringify({ type: "file", encoding: "base64", sha: "s", size: 5, content: Buffer.from("hello").toString("base64") }));
+    }
+    res.statusCode = 404;
+    res.end("{}");
+  });
+  await new Promise<void>((r) => server.listen(0, r));
+  const client = new GiteaClient(`http://127.0.0.1:${(server.address() as any).port}`, "t");
+  try {
+    await assert.rejects(client.getFile("novox", "hq", "bin/big", "main"),
+      /the file is 5000000 bytes, over the 512 KiB a tool answer can carry; read it from a clone/);
+    assert.ok(!asked.some((u) => u.includes("/contents/bin/big")), asked.join("\n"));
+    assert.equal((await client.getFile("novox", "hq", "bin/small", "main")).content, "hello");
+  } finally {
+    await new Promise<void>((r) => server.close(() => r()));
+  }
+});

modules/gitea/test/tools-account.test.ts

@@ -28,6 +28,7 @@ interface Team { id: number; name: string; units: any; members: Set<string> }
 
 interface ForgeRepo { owner: string; name: string; full: string; private: boolean; archived?: boolean; ownerVisibility: string; collaborators: Map<string, string> }
 const forgeRepos: ForgeRepo[] = [];
+const userRules = new Map<string, any>();
 const repoFaults = { refuse: new Set<string>(), permission: new Set<string>() };
 function addRepo(full: string, isPrivate: boolean, ownerVisibility = "public"): ForgeRepo {
   const [owner, name] = full.split("/");
@@ -84,7 +85,7 @@ function fakeForge() {
   const server = createServer(async (req, res) => {
     const url = new URL(req.url ?? "/", "http://fake");
     const p = url.pathname.replace(/^\/api\/v1/, "");
-    const me = who(req);
+    const me = url.searchParams.has("sudo") && isAdmin(who(req)) ? url.searchParams.get("sudo") : who(req);
     calls.push(`${req.method} ${p} as ${me}`);
     if (me === null) return json(res, 401, { message: "unauthorized" });
 
@@ -168,6 +169,23 @@ function fakeForge() {
       if (m[2] === "feat/unguarded") return json(res, 200, { name: m[2], protected: false });
       return json(res, 404, { message: "branch does not exist" });
     }
+    // A repository of a user: its rules are its administrator's (a site administrator, or a collaborator with admin).
+    m = p.match(/^\/repos\/(?!novox\/)([^/]+)\/([^/]+)\/branch_protections(?:\/(.*))?$/);
+    if (m) {
+      const key = `${m[1]}/${m[2]}`;
+      const repo = forgeRepos.find((r) => r.full === key);
+      if (!repo || !["admin", "owner"].includes(permissionOf(me, repo))) return json(res, 403, { message: "user should be an owner or a collaborator with admin write of a repository" });
+      if (req.method === "GET" && m[3] === undefined) return json(res, 200, userRules.has(key) ? [userRules.get(key)] : []);
+      // As gitea does: a whitelist login that cannot write the repository is dropped, and the write still answered.
+      const keep = (b: any) => (Array.isArray(b.merge_whitelist_usernames)
+        ? { ...b, merge_whitelist_usernames: b.merge_whitelist_usernames.filter((u: string) => ["write", "admin", "owner"].includes(permissionOf(u, repo))) } : b);
+      if (req.method === "PATCH" && m[3] === "main") {
+        if (!userRules.has(key)) return json(res, 404, { message: "branch protection does not exist" });
+        Object.assign(userRules.get(key), keep(await read(req)));
+        return json(res, 200, userRules.get(key));
+      }
+      if (req.method === "POST") { const b = keep(await read(req)); userRules.set(key, b); return json(res, 201, b); }
+    }
     // gitea's reqAdmin on the whole group: reading the rules is administration too.
     m = p.match(/^\/repos\/novox\/([^/]+)\/branch_protections(?:\/(.*))?$/);
     if (m) {
@@ -205,6 +223,7 @@ function fakeForge() {
     m = p.match(/^\/repos\/([^/]+)\/([^/]+)(?:\/collaborators\/([^/]+)(\/permission)?)?$/);
     if (m) {
       const repo = forgeRepos.find((r) => r.owner === decodeURIComponent(m![1]) && r.name === decodeURIComponent(m![2]));
+      if (repo && req.method === "GET" && !m[3] && url.searchParams.has("sudo") && repoFaults.permission.has(repo.full)) return json(res, 500, { message: "the forge is not well" });
       if (!repo || permissionOf(me, repo) === "none") return json(res, 404, { message: "repository does not exist" });
       if (req.method === "GET" && !m[3]) {
         const mine = permissionOf(me, repo);
@@ -214,7 +233,8 @@ function fakeForge() {
       if (req.method === "GET" && m[4]) {
         if (repoFaults.permission.has(repo.full)) return json(res, 500, { message: "the forge is not well" });
         if (!isAdmin(me) && me !== user) return json(res, 403, { message: "only the user or an administrator" });
-        return json(res, 200, { permission: permissionOf(user, repo) });
+        // As gitea answers: the collaborator's own permission, not what a team gives the account.
+        return json(res, 200, { permission: repo.collaborators.get(user) ?? "read" });
       }
       if (req.method === "PUT" && !m[4]) {
         // gitea's reqAdmin: the repository's administration, which on a repository of another user the site administrator alone holds.
@@ -608,7 +628,8 @@ test("the merging account is given write on each repository the indexer's module
   await writes.take({ key: "car-hunter-2", op: "put", value: { v: 1, repository: "jschoubben/car-hunter" } });
   assert.equal(forge.calls.length, from, "a repository already written asks nothing more");
   const repo = (full: string) => forgeRepos.find((x) => x.full === full)!;
-  assert.equal(repo("jschoubben/car-hunter").collaborators.get(TOOLS_ACCOUNT), "write");
+  assert.equal(repo("jschoubben/car-hunter").collaborators.get(TOOLS_ACCOUNT), "write", "a user's repository is written, not administered");
+  assert.equal(userRules.has("jschoubben/car-hunter"), false, "a repository with no rule for main is given none");
   assert.equal(repo("novox/hq").collaborators.size, 0, "the organisation's repository is written through its team, no collaborator");
   assert.equal((await client.getRepo("jschoubben", "car-hunter")).writes, true);
   assert.deepEqual(said, [{ type: WRITABLE_EVENT, body: { owner: "jschoubben", repo: "car-hunter", account: TOOLS_ACCOUNT } }]);
@@ -636,9 +657,37 @@ test("the merging account is given write on each repository the indexer's module
   assert.ok(!forge.calls.slice(puts).some((c) => c.startsWith("PUT ")), "no write is asked on a repository no module builds from");
   assert.equal(repo("jschoubben/dotfiles").collaborators.get(TOOLS_ACCOUNT), "read");
   repoFaults.refuse.clear();
+  // The operator's rule is left as set (the operator, 2026-10-26: "Write, rule untouched"): only mesh-tools is added to its
+  // merge whitelist; a status the mesh does not set and required approvals are said as blocking the mesh's merge, unchanged.
+  const operators = { rule_name: "main", enable_push: true, enable_merge_whitelist: true, merge_whitelist_usernames: ["jschoubben"],
+    enable_status_check: true, status_check_contexts: ["mesh/check", "mesh/merge-gate", "ci/external"], required_approvals: 2,
+    block_admin_merge_override: false, require_signed_commits: true, block_on_outdated_branch: true, block_on_rejected_reviews: true };
+  userRules.set("jschoubben/snake", structuredClone(operators));
   const after = await grantTool.run({ repositories: ["jschoubben/snake"] }) as any;
   assert.deepEqual(after.granted, ["jschoubben/snake"]);
-  assert.deepEqual(((await unwritableTool.run({})) as any).unwritable, []);
+  assert.equal(repo("jschoubben/snake").collaborators.get(TOOLS_ACCOUNT), "write");
+  assert.deepEqual(userRules.get("jschoubben/snake"), { ...operators, merge_whitelist_usernames: ["jschoubben", TOOLS_ACCOUNT] }, "only the whitelist changed");
+  assert.deepEqual(after.merge_whitelist, [{ repository: "jschoubben/snake", changed: true, listed: ["jschoubben", TOOLS_ACCOUNT] }]);
+  const blockedWhy = "writable, but main's rule blocks the mesh's merge: it requires the status ci/external, which the mesh does not set; " +
+    "it requires 2 approving reviews on the forge, which the gate does not give; it requires signed commits, which the mesh does not make; " +
+    "it refuses a branch behind main, which the mesh does not bring up to date; " +
+    "it refuses a merge after a review asked for changes, which the gate does not clear";
+  assert.deepEqual(after.merge_blocked, [{ repository: "jschoubben/snake", why: blockedWhy }]);
+  const again = await unwritableTool.run({}) as any;
+  assert.deepEqual([again.unwritable, again.merge_blocked], [[], [{ repository: "jschoubben/snake", why: blockedWhy }]]);
+  const writesBefore = forge.calls.filter((c) => /^PATCH .*branch_protections/.test(c)).length;
+  assert.deepEqual(((await grantTool.run({ repositories: ["jschoubben/snake"] })) as any).merge_whitelist[0].changed, false);
+  assert.equal(forge.calls.filter((c) => /^PATCH .*branch_protections/.test(c)).length, writesBefore, "a listed account is not written again");
+  // The mesh's own statuses never block: a rule requiring only them, with mesh-tools listed, is not reported.
+  userRules.set("jschoubben/snake", { rule_name: "main", enable_merge_whitelist: true, merge_whitelist_usernames: [TOOLS_ACCOUNT],
+    enable_status_check: true, status_check_contexts: ["mesh/check", "mesh/merge-gate", "mesh/repo-check"] });
+  assert.deepEqual(((await unwritableTool.run({})) as any).merge_blocked, []);
+  assert.deepEqual(((await grantTool.run({ repositories: ["jschoubben/snake"] })) as any).merge_blocked, []);
+  // The forge drops a whitelist login that cannot write and still answers 200: the whitelist is read back and that fails loud.
+  userRules.set("jschoubben/dotfiles", { rule_name: "main", enable_merge_whitelist: true, merge_whitelist_usernames: ["jschoubben"] });
+  await assert.rejects(GiteaAdmin.fromEnv(env).ensureMergerListed("jschoubben", "dotfiles", TOOLS_ACCOUNT),
+    /mesh-tools was added to the merge whitelist of main's rule main of jschoubben\/dotfiles, but the forge holds \[jschoubben\]: it drops a login that cannot write/);
+  userRules.delete("jschoubben/dotfiles");
   // A module gone from the indexer leaves its repository out of the delivered list.
   await writes.take({ key: "snake", op: "delete" });
   assert.deepEqual(writes.delivered(), ["jschoubben/car-hunter", "novox/hq"]);

modules/gitea/tools/index.ts

@@ -374,7 +374,7 @@ function allGiteaTools(gitea: GiteaClient, admin?: () => GiteaAdmin): ToolDefini
     // ---- Contents and branches ----
     {
       name: "gitea_get_file",
-      description: "One file's contents from a repository, decoded, at a branch, tag or commit (default the repository's default branch).",
+      description: "One file's contents from a repository, decoded, at a branch, tag or commit (default the repository's default branch). Refuses a file over 512 KiB, which a tool answer cannot carry: read it from a clone.",
       input: {
         owner: { type: "string", description: "the repository owner" },
         repo: { type: "string", description: "the repository name" },

modules/gitea/writes.ts

@@ -18,10 +18,18 @@
 // `repo.writable` {owner, repo, account}: mesh-delivery-gate, which does not ask the operator's Approve of a pull request
 // whose merge the forge would refuse, reads that repository again on it.
 //
+// **A repository of a user is written, and main's rule is left as the operator set it** (the operator, 2026-10-26, asked
+// "Write, rule untouched"): the account is a write collaborator there, and only added to main's merge whitelist when that
+// rule keeps one (client.ts ensureMergerListed). What else in main's rule stops the mesh's merge (a status the mesh does not
+// set, approvals the gate does not give) is changed by nobody but said: both tools list such a repository as writable, but
+// blocked, with why (merge_blocked).
+//
 // Not taken away: a repository whose last module goes from the indexer keeps its collaborator until a hand removes it;
 // gitea_unwritable_repos and gitea_grant_write say the delivered list as it is now.
 
 import type { ForgeRepository } from "./client.js";
+import type { BranchProtection } from "./protection.js";
+import { CHECK_CONTEXT, CHECK_STATUS, REPO_CHECK_CONTEXT } from "./pulls.js";
 
 /** The indexer's state this module reads: one key per registered module, its value naming the repository. */
 export const INDEXER_MODULES = "mesh-delivery-indexer.modules";
@@ -34,8 +42,35 @@ export interface WriteForge {
   repository(owner: string, repo: string): Promise<ForgeRepository | null>;
   repositoryPermission(owner: string, repo: string, user: string): Promise<string>;
   addWriteCollaborator(owner: string, repo: string, user: string): Promise<void>;
+  mainRule(owner: string, repo: string): Promise<BranchProtection | null>;
+  ensureMergerListed(owner: string, repo: string, account: string): Promise<{ changed: boolean; rule: BranchProtection | null }>;
 }
 
+/** The statuses every pull request the mesh delivers carries (mesh-delivery's checks); a rule requiring another blocks. */
+const MESH_CONTEXTS = new Set([CHECK_STATUS, CHECK_CONTEXT, REPO_CHECK_CONTEXT]);
+
+/** What in main's rule stops the mesh's merge, in words; empty when nothing does. Changed by nobody here: the operator's. */
+export function mergeBlocks(rule: BranchProtection | null, account: string): string[] {
+  if (!rule) return [];
+  const blocks: string[] = [];
+  if (rule.enable_merge_whitelist === true && !(rule.merge_whitelist_usernames ?? []).includes(account)) {
+    blocks.push(`its merge whitelist [${(rule.merge_whitelist_usernames ?? []).join(", ")}] leaves out ${account} (gitea_grant_write adds it)`);
+  }
+  if (rule.enable_status_check === true) {
+    for (const c of rule.status_check_contexts ?? []) {
+      if (!MESH_CONTEXTS.has(c)) blocks.push(`it requires the status ${c}, which the mesh does not set`);
+    }
+  }
+  const approvals = Number(rule.required_approvals ?? 0);
+  if (approvals > 0) blocks.push(`it requires ${approvals} approving review${approvals === 1 ? "" : "s"} on the forge, which the gate does not give`);
+  if (rule.require_signed_commits === true) blocks.push("it requires signed commits, which the mesh does not make");
+  if (rule.block_on_outdated_branch === true) blocks.push("it refuses a branch behind main, which the mesh does not bring up to date");
+  if (rule.block_on_rejected_reviews === true) blocks.push("it refuses a merge after a review asked for changes, which the gate does not clear");
+  return blocks;
+}
+
+const blockedWhy = (blocks: string[]): string => `writable, but main's rule blocks the mesh's merge: ${blocks.join("; ")}`;
+
 /** One change of the indexer's modules state, as the SDK's state watch hands it. */
 export interface ModulesChange {
   key: string;
@@ -51,8 +86,13 @@ export interface Written {
   delivered: string[];
   /** Made writable now, each read back from the forge. */
   granted: string[];
-  /** Written already (the organisation's team, or a collaborator that writes). */
+  /** Written already (a collaborator of a user's repository), or written through the organisation's team. */
   already: string[];
+  /** Each repository of a user: whether the account was added to main's merge whitelist now, and the whitelist read back
+   *  (null: main's rule keeps no whitelist, or there is no rule, and whoever writes may merge). */
+  merge_whitelist: { repository: string; changed: boolean; listed: string[] | null }[];
+  /** Writable, but main's rule (the operator's, left as set) stops the mesh's merge, and why. */
+  merge_blocked: { repository: string; why: string }[];
   /** The forge refused, in its own words; or the repository is the organisation's, whose team should write it. */
   refused: { repository: string; why: string }[];
   /** Repositories the account cannot write that are left so, and why: they build no registered module. */
@@ -118,7 +158,7 @@ export class DeliveredWrites {
         "(the watch is not granted or not answered); nothing is granted");
     }
     const delivered = this.delivered();
-    const result: Written = { account: this.account, delivered, granted: [], already: [], refused: [], left_read_only: [] };
+    const result: Written = { account: this.account, delivered, granted: [], already: [], merge_whitelist: [], merge_blocked: [], refused: [], left_read_only: [] };
     const named = only && only.length ? only.map((x) => String(x).trim()) : null;
     const targets: string[] = [];
     for (const full of named ?? delivered) {
@@ -140,36 +180,55 @@ export class DeliveredWrites {
         result.refused.push({ repository: full, why: `its permission could not be read — ${said(err)}` });
         continue;
       }
-      if (WRITES.has(permission)) {
-        this.writable.add(full);
-        result.already.push(full);
-        continue;
-      }
       if (owner === this.org) {
+        if (WRITES.has(permission)) {
+          this.writable.add(full);
+          result.already.push(full);
+          continue;
+        }
         // The organisation's repositories are written through its team (tools-account.ts), never a collaborator.
         result.refused.push({ repository: full, why: `a repository of ${this.org}, which ${this.account} writes through the ` +
           `team ${this.org}/${this.account}; the forge gives it "${permission}", so the team is not as it should be (it is ` +
           "set again at the next mint of the tools' token)" });
         continue;
       }
-      try {
+      // A repository of a user: the account writes it, and is put on main's merge whitelist when the rule keeps one.
-        await this.forge.addWriteCollaborator(owner, name, this.account);
+      let changed = false;
-      } catch (err) {
+      if (!WRITES.has(permission)) {
-        result.refused.push({ repository: full, why: said(err) });
+        try {
-        continue;
+          await this.forge.addWriteCollaborator(owner, name, this.account);
+        } catch (err) {
+          result.refused.push({ repository: full, why: said(err) });
+          continue;
+        }
+        let after: string;
+        try {
+          after = await this.forge.repositoryPermission(owner, name, this.account);
+        } catch (err) {
+          result.refused.push({ repository: full, why: `granted, but its permission could not be read back — ${said(err)}` });
+          continue;
+        }
+        if (!WRITES.has(after)) {
+          result.refused.push({ repository: full, why: `the grant was answered, but the forge still gives ${this.account} "${after}"` });
+          continue;
+        }
+        changed = true;
       }
-      let after: string;
       try {
-        after = await this.forge.repositoryPermission(owner, name, this.account);
+        const { changed: listedNow, rule } = await this.forge.ensureMergerListed(owner, name, this.account);
+        result.merge_whitelist.push({ repository: full, changed: listedNow,
+          listed: rule?.enable_merge_whitelist === true ? (rule.merge_whitelist_usernames ?? []) : null });
+        const blocks = mergeBlocks(rule, this.account);
+        if (blocks.length > 0) result.merge_blocked.push({ repository: full, why: blockedWhy(blocks) });
       } catch (err) {
-        result.refused.push({ repository: full, why: `granted, but its permission could not be read back — ${said(err)}` });
+        result.refused.push({ repository: full, why: `${this.account} writes it, but could not be put on main's merge whitelist — ${said(err)}` });
-        continue;
-      }
-      if (!WRITES.has(after)) {
-        result.refused.push({ repository: full, why: `the grant was answered, but the forge still gives ${this.account} "${after}"` });
         continue;
       }
       this.writable.add(full);
+      if (!changed) {
+        result.already.push(full);
+        continue;
+      }
       result.granted.push(full);
       await this.emit(WRITABLE_EVENT, { owner, repo: name, account: this.account }).catch((err) =>
         this.log(`${this.account} writes ${full} now, and that could not be said on the bus — ${said(err)}`));
@@ -192,10 +251,12 @@ export class DeliveredWrites {
   }
 
   /** Every delivered repository the account cannot write, as the forge says now, and why. */
-  async unwritable(): Promise<{ account: string; delivered: number; unwritable: { repository: string; permission: string; why: string }[] }> {
+  async unwritable(): Promise<{ account: string; delivered: number; unwritable: { repository: string; permission: string; why: string }[];
+    merge_blocked: { repository: string; why: string }[] }> {
     if (!this.heard) throw new Error(`which repositories build a registered module is not known yet: ${INDEXER_MODULES} has not been read`);
     const delivered = this.delivered();
     const out: { repository: string; permission: string; why: string }[] = [];
+    const blocked: { repository: string; why: string }[] = [];
     for (const full of delivered) {
       const [owner, name] = split(full);
       let permission: string;
@@ -205,12 +266,21 @@ export class DeliveredWrites {
         out.push({ repository: full, permission: "unknown", why: `the forge did not answer ${this.account}'s permission on it — ${said(err)}` });
         continue;
       }
-      if (WRITES.has(permission)) continue;
+      if (WRITES.has(permission)) {
+        if (owner === this.org) continue; // the organisation's main rules are the mesh's own (mainrules.ts)
+        try {
+          const blocks = mergeBlocks(await this.forge.mainRule(owner, name), this.account);
+          if (blocks.length > 0) blocked.push({ repository: full, why: blockedWhy(blocks) });
+        } catch (err) {
+          blocked.push({ repository: full, why: `writable, but main's rule could not be read — ${said(err)}` });
+        }
+        continue;
+      }
       const modules = [...this.modules].filter(([, r]) => r === full).map(([m]) => m).sort();
       out.push({ repository: full, permission, why: `builds ${modules.join(", ")}, and the forge gives ${this.account} ` +
         `"${permission}" on it: its commit status and its merge are refused until gitea_grant_write grants it` });
     }
-    return { account: this.account, delivered: delivered.length, unwritable: out };
+    return { account: this.account, delivered: delivered.length, unwritable: out, merge_blocked: blocked };
   }
 }
 
@@ -224,14 +294,19 @@ export function writeTools(writes: () => DeliveredWrites): Tool[] {
       description: "Every repository that builds a registered module (the indexer's modules, read over the bus) on which " +
         "the mesh's merging forge account (mesh-tools, which sets commit statuses and merges) cannot write, with the " +
         "permission the forge gives it there and why: such a pull request can be checked but never merged, and the " +
-        "delivery gate does not ask its Approve. Empty when it writes every one. Read with the site administrator's login.",
+        "delivery gate does not ask its Approve. Empty when it writes every one. Its merge_blocked lists each repository of " +
+        "a user it writes whose main's rule (the operator's, left as set) still stops the mesh's merge: a merge whitelist " +
+        "without it, a required status the mesh does not set, required approving reviews. Read with the site administrator's login.",
       input: {},
       run: async () => writes().unwritable(),
     },
     {
       name: "gitea_grant_write",
-      description: "Give the mesh's merging forge account (mesh-tools) write, as a collaborator, on every repository that " +
+      description: "Give the mesh's merging forge account (mesh-tools) write, as a collaborator, on every repository of a " +
-        "builds a registered module and that it cannot write now, or on the repositories named (each must build one). " +
+        "user that builds a registered module, or on the repositories named (each must build one). Main's rule there is left " +
+        "as the operator set it; only when it keeps a merge whitelist is mesh-tools added to it, read back (merge_whitelist). " +
+        "What else in that rule stops the mesh's merge (a required status the mesh does not set, required approving reviews) " +
+        "is changed by nobody and said in merge_blocked. " +
         "The module does this itself at its start and when a module of a new repository is registered; this is the same " +
         "act by hand, such as when a merge or a commit status was refused 403. A repository of the organisation novox " +
         "is written through its team and needs nothing. Answers what was granted (each read back from the forge), what " +

modules/mesh-build-go/cmd/mesh-build-go/asks.go

@@ -84,9 +84,17 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
 	// The capacity's own change wakes the puller (issue 1887): the runtime's watch of the config value as mesh-config
 	// resolved it; the settings file is read only when that watch cannot start. A test's Capacity is its own.
 	var watch func(string, func(stdio.ProvisionChange) error) error
+	// And the CPU bounds it (issue 1806's follow-up): the configured capacity is an upper bound, the node's build slice
+	// gives floor(its quota's cores / the module's cores-per-step) at once, read live; a test judges by its own Capacity.
+	// And the node's build hours (the operator, 2026-10-26: g14 builds only from 18:00 to 06:00): outside them it takes
+	// nothing new.
+	var cores func() float64
+	var hours func() (*buildstep.BuildWindow, string)
 	if capacity == nil {
+		hours = buildstep.NodeBuildHours(m.Settings, m.Node, m.Say)
 		capacity = buildstep.NodeCapacity(m.Settings, buildstep.DefaultCapacities, m.Node, m.Say)
 		watch = buildstep.WatchConfigServed
+		cores = buildstep.NodeCoresPerStep(m.Settings, buildstep.DefaultCoresPerStep[delivery.AskGo], m.Say)
 	}
 	ask := m.askSteps(steps)
 	var load func(string) ([]byte, error)
@@ -97,7 +105,7 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
 		}
 	}
 	return &buildstep.Puller{Source: source, Language: delivery.AskGo, Node: m.Node, Put: m.Steps, PausePut: m.Pauses, Load: load,
-		Capacity: capacity, WatchConfig: watch, Logf: m.Say, Has: m.Has,
+		Capacity: capacity, WatchConfig: watch, CoresPerStep: cores, BuildHours: hours, Logf: m.Say, Has: m.Has,
 		Run: func(ctx context.Context, a delivery.StepAsk) (any, error) {
 			if err := m.Check(ctx); err != nil {
 				return nil, err

modules/mesh-build-go/cmd/mesh-build-go/asks_test.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"os"
 	"slices"
 	"strings"
@@ -125,12 +126,28 @@ func TestManifestClaimsTheGoBuildSeatAndReadsItsCapacity(t *testing.T) {
 	raw, _ := os.ReadFile(moduleDir + "/module.json")
 	var doc struct {
 		Config map[string]struct {
-			Default string `json:"default"`
+			Default json.RawMessage `json:"default"`
 		} `json:"config"`
 	}
 	_ = json.Unmarshal(raw, &doc)
-	if doc.Config[buildstep.CapacitySetting].Default != buildstep.DefaultCapacities {
+	// Issue 1806's follow-up: the cores a step needs is a setting of its own, in the settings file, with the SDK's default.
-		t.Errorf("the capacity's default = %q, want %q", doc.Config[buildstep.CapacitySetting].Default, buildstep.DefaultCapacities)
+	if cores := string(doc.Config[buildstep.CoresPerStepSetting].Default); cores != fmt.Sprint(buildstep.DefaultCoresPerStep[delivery.AskGo]) {
+		t.Errorf("the cores-per-step default = %s, want %g", cores, buildstep.DefaultCoresPerStep[delivery.AskGo])
+	}
+	if got := buildstep.NodeCoresPerStep(moduleDir+"/files/settings.json", 0, nil)(); got != buildstep.DefaultCoresPerStep[delivery.AskGo] {
+		t.Errorf("the settings template holds cores-per-step %g", got)
+	}
+	// And the build hours (the operator, 2026-10-26): a setting of their own, empty by default (any hour), in the template.
+	if hours := string(doc.Config[buildstep.BuildHoursSetting].Default); hours != `""` {
+		t.Errorf("the build-hours default = %s, want empty", hours)
+	}
+	if w, fault := buildstep.NodeBuildHours(moduleDir+"/files/settings.json", "g14", t.Errorf)(); w != nil || fault != "" {
+		t.Errorf("the settings template holds build hours %v (%s)", w, fault)
+	}
+	var capacity string
+	_ = json.Unmarshal(doc.Config[buildstep.CapacitySetting].Default, &capacity)
+	if capacity != buildstep.DefaultCapacities {
+		t.Errorf("the capacity's default = %q, want %q", capacity, buildstep.DefaultCapacities)
 	}
 	settings := resource(t, m, "settings")
 	if settings["path"] != "${dir:state}/settings.json" {

modules/mesh-build-go/cmd/mesh-build-go/cpu.go

@@ -15,6 +15,8 @@ import (
 func (m *Module) cpuLimits() buildcpu.Limits {
 	slots := 1
 	switch {
+	case m.Held != nil:
+		slots = m.Held.CapacityNow() // the capacity the puller judges by, bounded by the node's build slice
 	case m.Capacity != nil:
 		slots = m.Capacity()
 	case m.Settings != "":
@@ -32,5 +34,9 @@ func (m *Module) threadEnv() []string {
 // cpuStatus is what the status tool says of it: the limits a step is given, and what the kernel holds this runtime
 // to (its unit and its slice), read from its cgroup rather than assumed.
 func (m *Module) cpuStatus() map[string]any {
-	return map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
+	out := map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
+	if m.Held != nil {
+		out["capacity"] = m.Held.CapacityDetail() // the capacity judged by and why (issue 1806's follow-up)
+	}
+	return out
 }

modules/mesh-build-go/cmd/mesh-build-go/failure_words_test.go

@@ -0,0 +1,112 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+	"strings"
+	"testing"
+)
+
+// A failed test keeps the lines that say why it failed, not the lines it logged first (issue 1901). The fixture is
+// the real `go test -json` of a test that logs a line and then fails with a multi-line t.Fatalf.
+func TestAFailedTestKeepsItsFatalMessageAfterItsLogLines(t *testing.T) {
+	raw, err := os.ReadFile("testdata/captured/go-test-json-log-then-fatal.jsonl")
+	if err != nil {
+		t.Fatal(err)
+	}
+	res := &TestResult{}
+	rd := newReader(res, ".")
+	rd.read(string(raw))
+	rd.finish()
+	if len(res.Failed) != 1 {
+		t.Fatalf("failures = %+v, want one", res.Failed)
+	}
+	f := res.Failed[0]
+	for _, want := range []string{"3 subscription(s) derive to a subject no emitter owns:", "a.b.c", "d.e.f", "g.h.i"} {
+		if !strings.Contains(f.Output, want) {
+			t.Errorf("1901/AC1: output lacks %q: %q", want, f.Output)
+		}
+	}
+	if want := "3 subscription(s) derive to a subject no emitter owns:"; f.Cause != want && !strings.HasSuffix(f.Cause, want) {
+		t.Errorf("1901/AC1: cause = %q, want the t.Fatalf line, not the t.Logf line", f.Cause)
+	}
+}
+
+// A failure longer than the bound keeps its last lines, where the cause is, and says how many earlier lines it dropped.
+func TestAFailureLongerThanTheBoundKeepsItsLastLines(t *testing.T) {
+	var lines []string
+	for i := 0; i < 400; i++ {
+		lines = append(lines, "    x_test.go:1: log line "+strings.Repeat("y", 40))
+	}
+	lines = append(lines, "    x_test.go:9: the real cause", "--- FAIL: TestX (0.00s)")
+	out := clip(lines, "")
+	if len(out) > outputBytes+100 {
+		t.Errorf("1901/AC1: kept %d bytes, bound is %d", len(out), outputBytes)
+	}
+	if !strings.HasSuffix(out, "the real cause\n--- FAIL: TestX (0.00s)") || !strings.Contains(out, "\n... (") {
+		t.Errorf("1901/AC1: out = %q...%q", out[:40], out[len(out)-60:])
+	}
+}
+
+// An older checker, which knows no "cause" field, still reads the new build module's answer, and the output it gets
+// holds at least what the older build module kept (its first lines, for an output shorter than the bound).
+func TestAnOlderCheckerReadsTheNewFailureAndGetsAtLeastWhatItKept(t *testing.T) { // 1901/AC3
+	raw, err := os.ReadFile("testdata/captured/go-test-json-log-then-fatal.jsonl")
+	if err != nil {
+		t.Fatal(err)
+	}
+	res := &TestResult{}
+	rd := newReader(res, ".")
+	rd.read(string(raw))
+	rd.finish()
+	b, err := json.Marshal(res.Failed)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var old []struct {
+		Package string `json:"package"`
+		Test    string `json:"test,omitempty"`
+		Output  string `json:"output,omitempty"`
+	}
+	if err := json.Unmarshal(b, &old); err != nil || len(old) != 1 {
+		t.Fatalf("1901/AC3: an older checker refused the answer: %v, %d failures", err, len(old))
+	}
+	first := strings.SplitN(old[0].Output, "\n", 2)[0]
+	if first == "" || !strings.Contains(old[0].Output, "judged against") || !strings.Contains(old[0].Output, "3 subscription(s)") {
+		t.Errorf("1901/AC3: older checker's output = %q", old[0].Output)
+	}
+}
+
+// A long failure, whose earlier lines are left out, still starts with a real line for an older checker, which keeps only the
+// first non-empty line of the output cut to 120 characters, and not with the marker.
+func TestALongFailureStillStartsWithARealLineForAnOlderChecker(t *testing.T) { // 1901/AC3
+	var lines []string
+	for i := 0; i < 400; i++ {
+		lines = append(lines, "    x_test.go:1: log line "+strings.Repeat("y", 40))
+	}
+	lines = append(lines, "    x_test.go:9: the real cause", "--- FAIL: TestX (0.00s)")
+	oldFirst := func(out string) string { // the older checker's rule (judge.go firstLine)
+		for _, l := range strings.Split(out, "\n") {
+			if l = strings.TrimSpace(l); l != "" {
+				if len(l) > 120 {
+					l = l[:120]
+				}
+				return l
+			}
+		}
+		return ""
+	}
+	for _, cause := range []string{"the real cause", ""} {
+		out := clip(lines, cause)
+		got := oldFirst(out)
+		if strings.HasPrefix(got, "... (") || got == "" {
+			t.Errorf("1901/AC3: cause %q: an older checker would read %q", cause, got)
+		}
+		if cause != "" && got != cause {
+			t.Errorf("1901/AC3: older checker reads %q, want the cause", got)
+		}
+		if !strings.HasSuffix(out, "--- FAIL: TestX (0.00s)") {
+			t.Errorf("1901/AC3: the last lines are lost: %q", out[len(out)-40:])
+		}
+	}
+}

modules/mesh-build-go/cmd/mesh-build-go/fetch.go

@@ -42,11 +42,13 @@ type FetchResult struct {
 	// head onto it, the paths the merge changes, and the tree of each module directory (a directory holding a
 	// module.json) in the merge. A head that does not merge cleanly is an answer: Merge is empty, Conflicts names the
 	// files, and the workspace is left at the trunk commit.
-	Base      string                          `json:"base,omitempty"`
+	Base      string   `json:"base,omitempty"`
-	Merge     string                          `json:"merge,omitempty"`
+	Merge     string   `json:"merge,omitempty"`
-	Conflicts []string                        `json:"conflicts,omitempty"`
+	Conflicts []string `json:"conflicts,omitempty"`
-	Changed   []string                        `json:"changed,omitempty"`
+	Changed   []string `json:"changed,omitempty"`
-	Trees     map[string]buildstep.ModuleTree `json:"trees,omitempty"`
+	// Programs are the changed files that are compiled programs (issue 1577); a merge answers it, a pointer to an empty list when there are none, absent for a fetch that made no merge.
+	Programs *[]buildstep.Program            `json:"programs,omitempty"`
+	Trees    map[string]buildstep.ModuleTree `json:"trees,omitempty"`
 	// Beside are the sibling repositories placed as plain directories under the workspace's beside directory, which
 	// build_go_test hands to the tests as MESH_CHECK_BESIDE (ADR 0484 clause 4).
 	Beside []Sibling `json:"beside,omitempty"`

modules/mesh-build-go/cmd/mesh-build-go/kit_test.go

@@ -1,22 +0,0 @@
-package main
-
-import (
-	"testing"
-
-	"git.novox.be/novox/mesh-sdk/go/buildstep"
-	"git.novox.be/novox/mesh-sdk/go/buildstep/conformance"
-)
-
-// 1901/AC7: the module's own parse path (readGoTest, then the level's judging) keeps the failure contract on every captured
-// go test -json case of the SDK's conformance kit, and its result names the module that sent it.
-func TestTheTestStepKeepsTheFailureContract(t *testing.T) {
-	conformance.Run(t, conformance.GoTest, func(o conformance.Output) []buildstep.Failure {
-		res := &TestResult{Level: LevelUnit, By: buildstep.By("mesh-build-go")}
-		readGoTest(res, ".", o.Stdout)
-		res.judge(Bounds{Run: UnitBound})
-		if res.Passed {
-			t.Errorf("a failed run judged passed: %+v", res)
-		}
-		return res.Failed
-	})
-}

modules/mesh-build-go/cmd/mesh-build-go/levels.go

@@ -6,12 +6,14 @@ package main
 // step that could not run.
 
 import (
+	"bufio"
+	"encoding/json"
 	"fmt"
+	"regexp"
+	"slices"
 	"sort"
 	"strings"
 	"time"
-
-	"git.novox.be/novox/mesh-sdk/go/buildstep"
 )
 
 // The two levels (ADR 0445 §2).
@@ -30,14 +32,39 @@ type Bounds struct {
 	Setup, Run time.Duration
 }
 
-// PackageResult, TestTime and Failure are the SDK's failure contract (buildstep, issue 1901), with the JSON names this
+// PackageResult is one package's part of a level.
-// module always sent: a Failure names its test, its file, its cause (never empty, never a passing line) and its own
+type PackageResult struct {
-// output up to 4096 bytes, cause first.
+	Dir     string  `json:"dir"`
-type (
+	Package string  `json:"package"`
-	PackageResult = buildstep.GoPackage
+	Passed  bool    `json:"passed"`
-	TestTime      = buildstep.TestTime
+	Elapsed float64 `json:"elapsed"`
-	Failure       = buildstep.Failure
+	Tests   int     `json:"tests"`
-)
+	// NoTests is a package with no test files (at this level: a file with the other level's build tag is none).
+	NoTests bool `json:"no_tests,omitempty"`
+	// Skipped is how many of the package's tests skipped: a pass that skipped proved less than it says, so the checker keeps no verdict for it.
+	Skipped int `json:"skipped,omitempty"`
+}
+
+// TestTime is one test and the time it took.
+type TestTime struct {
+	Package string  `json:"package"`
+	Test    string  `json:"test"`
+	Elapsed float64 `json:"elapsed"`
+}
+
+// Failure is a test that failed, or a package that failed with no test to name (a build that failed, a TestMain that
+// panicked); Output is the last lines it wrote, up to outputBytes (issue 1901), and Cause the first line of what the
+// test reported as its error (t.Error, t.Fatal), without its file and line, when go test said which lines those were.
+// **A failure that is not one test's assertion carries its real cause too** (issue 1901, its third meeting): the
+// "panic:" line (a timeout's with the tests it found running), a "fatal error:" or "signal:" line, a build's first
+// error, or in words that the test program exited, while which tests ran or after its tests passed. Test then names the
+// tests that were running when the program stopped. A "PASS" or "ok" line is never a failure's words.
+type Failure struct {
+	Package string `json:"package"`
+	Test    string `json:"test,omitempty"`
+	Output  string `json:"output,omitempty"`
+	Cause   string `json:"cause,omitempty"`
+}
 
 // TestResult is what a test step passes with.
 type TestResult struct {
@@ -71,23 +98,368 @@ type TestResult struct {
 	// JudgedBy is the program that ran the level (ADR 0535 §5): "installed", or "candidate <merge commit>" under the
 	// runner workspace.
 	JudgedBy string `json:"judged_by,omitempty"`
-	// By is the build module and the SDK it was built with (buildstep.By): the checker names it when a failure hides
-	// its cause.
-	By string `json:"by,omitempty"`
 }
 
-// readGoTest reads one go.mod directory's `go test -json` into res through the SDK's reader (issue 1901: one failure
+// event is one line of `go test -json` (test2json, and the build events go test adds).
-// contract for every build module, buildstep.Failure), and answers the lines that were no event and how many packages
+type event struct {
-// it named.
+	Action      string
-func readGoTest(res *TestResult, dir, out string) (noise []string, packages int) {
+	Package     string
-	read := buildstep.ReadGoTest(out, dir)
+	Test        string
-	res.Tests += read.Tests
+	Output      string
-	res.Skipped += read.Skipped
+	OutputType  string // "error" for a t.Error or t.Fatal message, "error-continue" for its further lines (go test -json)
-	res.Failed = append(res.Failed, read.Failed...)
+	ImportPath  string
-	res.Packages = append(res.Packages, read.Packages...)
+	FailedBuild string
-	res.Slowest = append(res.Slowest, read.Times...)
+	Elapsed     float64
-	res.Elapsed = max(res.Elapsed, read.Elapsed)
+}
-	return read.Noise, len(read.Packages)
+
+// outputBytes is the most a failure keeps of its output, and outputLineBytes the most of one line. **A failure keeps its
+// last lines** (issue 1901): a test logs before it fails, so the lines that say why are at the end, and the first
+// fifteen lines kept before lost them (the verdict of group r4g kept a t.Logf line, not the t.Fatalf after it). Four
+// kilobytes holds a long assertion message and stays far under a bus message's or a verdict's bound.
+const (
+	outputBytes     = 4096
+	outputLineBytes = 1024
+)
+
+// reader collects the events of one go.mod directory's `go test -json` into a result.
+type reader struct {
+	res      *TestResult
+	dir      string
+	pkgs     map[string]*PackageResult
+	order    []string
+	builds   map[string][]string // build output by import path
+	pkgOut   map[string][]string
+	testOut  map[string][]string // by package + "\x00" + test
+	causes   map[string]string   // the first error line of a test, by the same key
+	times    []TestTime
+	failedIn map[string]bool // packages with a failed test
+	// running is the tests that started and have not ended, by package, in the order they started: when a package
+	// fails with no failed test, these were running when its test program stopped (issue 1901).
+	running map[string][]string
+	// passed says a package's test program printed "PASS" (its tests passed) before it failed; built says its test
+	// program failed to build.
+	passed, built map[string]bool
+}
+
+func newReader(res *TestResult, dir string) *reader {
+	return &reader{res: res, dir: dir, pkgs: map[string]*PackageResult{}, builds: map[string][]string{},
+		pkgOut: map[string][]string{}, testOut: map[string][]string{}, causes: map[string]string{}, failedIn: map[string]bool{},
+		running: map[string][]string{}, passed: map[string]bool{}, built: map[string]bool{}}
+}
+
+// read takes go test's output. Lines that are not events are kept for a failure that has nothing else to say.
+func (r *reader) read(out string) (noise []string) {
+	sc := bufio.NewScanner(strings.NewReader(out))
+	sc.Buffer(make([]byte, 1<<20), 1<<26)
+	for sc.Scan() {
+		var ev event
+		if err := json.Unmarshal(sc.Bytes(), &ev); err != nil {
+			if l := strings.TrimSpace(sc.Text()); l != "" {
+				noise = append(noise, l)
+			}
+			continue
+		}
+		r.event(ev)
+	}
+	return noise
+}
+
+func (r *reader) pkg(name string) *PackageResult {
+	p := r.pkgs[name]
+	if p == nil {
+		p = &PackageResult{Dir: r.dir, Package: name}
+		r.pkgs[name] = p
+		r.order = append(r.order, name)
+	}
+	return p
+}
+
+func keep(lines []string, out string) []string {
+	if t := strings.TrimRight(out, "\r\n"); t != "" && !strings.HasPrefix(t, "=== ") {
+		lines = append(lines, t)
+	}
+	return lines
+}
+
+func (r *reader) event(ev event) {
+	switch {
+	case ev.Package == "" && ev.ImportPath != "":
+		if ev.Action == "build-output" {
+			r.builds[ev.ImportPath] = keep(r.builds[ev.ImportPath], ev.Output)
+		}
+	case ev.Package == "":
+	case ev.Test == "":
+		p := r.pkg(ev.Package)
+		switch ev.Action {
+		case "output":
+			// go test's own summary of a package ("PASS", "FAIL", "ok <pkg>", "FAIL <pkg>") is never a failure's
+			// words: a "PASS" before a "FAIL <pkg>" says only that the tests passed and the program failed after them.
+			switch l := strings.TrimRight(ev.Output, "\r\n"); {
+			case l == "PASS":
+				r.passed[ev.Package] = true
+			case summaryLine(l):
+			default:
+				r.pkgOut[ev.Package] = keep(r.pkgOut[ev.Package], ev.Output)
+			}
+		case "pass":
+			p.Passed, p.Elapsed = true, ev.Elapsed
+		case "fail":
+			p.Passed, p.Elapsed = false, ev.Elapsed
+			if ev.FailedBuild != "" {
+				r.built[ev.Package] = true
+				r.pkgOut[ev.Package] = append(r.builds[ev.FailedBuild], r.pkgOut[ev.Package]...)
+			}
+		case "skip":
+			p.Passed, p.NoTests = true, true
+		}
+	default:
+		key := ev.Package + "\x00" + ev.Test
+		switch ev.Action {
+		case "output":
+			r.testOut[key] = keep(r.testOut[key], ev.Output)
+			if ev.OutputType == "error" && r.causes[key] == "" {
+				r.causes[key] = errorWords(ev.Output)
+			}
+		case "run":
+			r.running[ev.Package] = append(r.running[ev.Package], ev.Test)
+		case "pass", "fail", "skip":
+			r.running[ev.Package] = slices.DeleteFunc(r.running[ev.Package], func(t string) bool { return t == ev.Test })
+			p := r.pkg(ev.Package)
+			p.Tests++
+			r.res.Tests++
+			if ev.Action == "skip" {
+				r.res.Skipped++
+				p.Skipped++
+			}
+			r.times = append(r.times, TestTime{Package: ev.Package, Test: ev.Test, Elapsed: ev.Elapsed})
+			if ev.Action == "fail" {
+				r.failedIn[ev.Package] = true
+				cause := r.causes[key]
+				if race := raceCause(r.testOut[key]); race != "" && (cause == "" || strings.HasPrefix(cause, "race detected")) {
+					cause = race // the race itself, not testing's "race detected during execution of test"
+				} else if cause == "" {
+					cause = causeOf(r.testOut[key])
+				}
+				r.res.Failed = append(r.res.Failed, Failure{Package: ev.Package, Test: ev.Test, Output: clip(r.testOut[key], cause), Cause: cause})
+			}
+		}
+	}
+}
+
+// clip joins the last lines of a failure's output that fit outputBytes, each cut to outputLineBytes, and says how many
+// earlier lines it left out. **Its first line is the failure's cause** (issue 1901/AC3, AC4), put ahead when the kept
+// lines do not start with it, or, with no cause and lines left out, the first non-empty line of the output, then the
+// marker. An older checker takes only the first non-empty line of the output, and a marker there would be less than the
+// older pair kept.
+func clip(lines []string, cause string) string {
+	size, from := 0, len(lines)
+	for from > 0 {
+		n := len(cutLine(lines[from-1])) + 1
+		if size+n > outputBytes && from < len(lines) {
+			break
+		}
+		size += n
+		from--
+	}
+	kept := make([]string, 0, len(lines)-from+2)
+	head := strings.TrimSpace(cause)
+	for i := 0; head == "" && i < from; i++ {
+		head = strings.TrimSpace(lines[i])
+	}
+	if head != "" && (from > 0 || len(lines) == 0 || strings.TrimSpace(lines[from]) != head) {
+		kept = append(kept, cutLine(head))
+	}
+	if from > 0 {
+		kept = append(kept, fmt.Sprintf("... (%d earlier lines)", from))
+	}
+	for _, l := range lines[from:] {
+		kept = append(kept, cutLine(l))
+	}
+	return strings.Join(kept, "\n")
+}
+
+// summaryLine says a line is go test's summary of a package, in go's exact forms only: "PASS" or "FAIL" alone,
+// "ok  \t<pkg>\t<time>" and "FAIL\t<pkg>\t<time>" (review round 1: a line of the package's own that starts "ok " is kept).
+func summaryLine(l string) bool {
+	return l == "PASS" || l == "FAIL" || strings.HasPrefix(l, "ok  \t") || strings.HasPrefix(l, "FAIL\t")
+}
+
+// causeOf is the cause in a failure's output that is not a test's assertion (issue 1901): a race the race detector
+// reported (raceCause); else the first "panic:" line, a timeout's with the tests it names as running; else the first
+// "fatal error:" (the runtime's) or "signal:" line (a test program killed); "" when there is none. It reads every line,
+// so a long goroutine dump after the panic cannot hide it. **It matches only lines at column 0**, where go prints the
+// runtime's: a test's indented log line holding the same words is not the cause (review round 1).
+func causeOf(lines []string) string {
+	if race := raceCause(lines); race != "" {
+		return race
+	}
+	for _, prefix := range []string{"panic: ", "fatal error: ", "signal: "} {
+		for i, l := range lines {
+			l = strings.TrimRight(l, "\r\n") // at column 0: an indented line is a test's own log, not the runtime's
+			if !strings.HasPrefix(l, prefix) {
+				continue
+			}
+			if strings.HasPrefix(l, "panic: test timed out after") {
+				var names []string
+				for _, n := range lines[i+1:] {
+					if !strings.HasPrefix(n, "\t\t") {
+						if strings.TrimSpace(n) == "running tests:" {
+							continue
+						}
+						break
+					}
+					names = append(names, strings.TrimSpace(n))
+				}
+				if len(names) > 0 {
+					l += "; running tests: " + strings.Join(names, ", ")
+				}
+			}
+			return cutLine(l)
+		}
+	}
+	return ""
+}
+
+// raceCause is the first race the race detector reported in a failure's output, in one line (issue 1901: a race after
+// the tests' "PASS" was worded "PASS"): its access and the frame that made it, and where the goroutine that made it was
+// created, as "WARNING: DATA RACE: Write at 0x... by goroutine 10 in pkg.F.func1() (f_test.go:13); goroutine created at
+// pkg.F() (f_test.go:13)". "" when the output holds no race.
+func raceCause(lines []string) string {
+	at := -1
+	for i, l := range lines {
+		if strings.TrimRight(l, "\r\n") == "WARNING: DATA RACE" { // at column 0, as causeOf
+			at = i
+			break
+		}
+	}
+	if at < 0 {
+		return ""
+	}
+	// frame is the function and the file's base name and line that follow a heading line at i.
+	frame := func(i int) string {
+		var fn, file string
+		for _, l := range lines[i+1:] {
+			if l = strings.TrimSpace(l); l == "" {
+				break
+			}
+			if fn == "" {
+				fn = l
+				continue
+			}
+			file = l
+			if j := strings.LastIndexByte(file, '/'); j >= 0 {
+				file = file[j+1:]
+			}
+			if j := strings.Index(file, " +0x"); j >= 0 {
+				file = file[:j]
+			}
+			break
+		}
+		if file != "" {
+			return fn + " (" + file + ")"
+		}
+		return fn
+	}
+	words := "WARNING: DATA RACE"
+	for i := at + 1; i < len(lines); i++ {
+		l := strings.TrimSpace(lines[i])
+		if l == "" || strings.HasPrefix(l, "===") {
+			continue
+		}
+		words += ": " + strings.TrimSuffix(l, ":")
+		if f := frame(i); f != "" {
+			words += " in " + f
+		}
+		break
+	}
+	for i := at + 1; i < len(lines); i++ {
+		l := strings.TrimSpace(lines[i])
+		if strings.HasPrefix(l, "==================") {
+			break
+		}
+		if strings.HasPrefix(l, "Goroutine ") && strings.HasSuffix(l, " created at:") {
+			if f := frame(i); f != "" {
+				words += "; its goroutine created at " + f
+			}
+			break
+		}
+	}
+	return cutLine(words)
+}
+
+// buildCause is the first error line of a failed build: the first line that is not go's "# <package>" heading.
+func buildCause(lines []string) string {
+	for _, l := range lines {
+		if l = strings.TrimSpace(l); l != "" && !strings.HasPrefix(l, "# ") {
+			return cutLine(l)
+		}
+	}
+	return ""
+}
+
+// testNames names the tests that were running, at most three, and how many more.
+func testNames(tests []string) string {
+	if len(tests) <= 3 {
+		return strings.Join(tests, ", ")
+	}
+	return fmt.Sprintf("%s and %d more", strings.Join(tests[:3], ", "), len(tests)-3)
+}
+
+// packageFailure is a package that failed with no failed test to name it (issue 1901): its test program did not build,
+// panicked, timed out, was killed or exited. It names the tests that were running when the program stopped, keeps
+// their output with the package's, and says the cause.
+func (r *reader) packageFailure(name string) Failure {
+	running := r.running[name]
+	var lines []string
+	for _, t := range running {
+		lines = append(lines, r.testOut[name+"\x00"+t]...)
+	}
+	lines = append(lines, r.pkgOut[name]...)
+	cause := causeOf(lines)
+	switch {
+	case cause != "":
+	case r.built[name]:
+		cause = buildCause(lines)
+	case len(running) > 0:
+		cause = "the test program exited while " + testNames(running) + " ran, with no panic: an os.Exit or a signal (go test -json reports no exit status)"
+	case r.passed[name]:
+		cause = "the tests passed, then the test program exited with a failure: an os.Exit or a panic in TestMain or after the tests (go test -json reports no exit status)"
+	}
+	if cause == "" {
+		cause = "the package failed with no test to name and no panic, signal or build error in its output"
+	}
+	return Failure{Package: name, Test: testNames(running), Output: clip(lines, cause), Cause: cause}
+}
+
+// cutLine cuts a line to outputLineBytes, on a character boundary.
+func cutLine(l string) string {
+	if len(l) <= outputLineBytes {
+		return l
+	}
+	return strings.ToValidUTF8(l[:outputLineBytes], "") + "..."
+}
+
+var fileAndLine = regexp.MustCompile(`^\S+\.go:\d+: `)
+
+// errorWords is the words of an error line of a test: trimmed, without the file and line go test put before them.
+func errorWords(out string) string {
+	return strings.TrimSpace(fileAndLine.ReplaceAllString(strings.TrimSpace(out), ""))
+}
+
+// finish moves what was read into the result: the packages in order, a failure for each failed package that has no
+// failed test to name it, and the tests' times.
+func (r *reader) finish() {
+	for _, name := range r.order {
+		p := r.pkgs[name]
+		if !p.Passed && !r.failedIn[name] {
+			r.res.Failed = append(r.res.Failed, r.packageFailure(name))
+		}
+		if !p.NoTests && p.Elapsed > r.res.Elapsed {
+			r.res.Elapsed = p.Elapsed
+		}
+		r.res.Packages = append(r.res.Packages, *p)
+	}
+	r.res.Slowest = append(r.res.Slowest, r.times...)
 }
 
 // judge sets Passed and Why from what was read and the bounds. A level with no failure, over no bound, passes; with no

modules/mesh-build-go/cmd/mesh-build-go/lint.go

@@ -104,7 +104,8 @@ func (m *Module) lint(ctx context.Context, run forgekey.Runner, tree, d string,
 	}
 	var failed []Failure
 	if len(files) > 0 {
-		failed = append(failed, buildstep.ConsoleFailure(d, "gofmt", "not as gofmt writes them (run gofmt -w): "+strings.Join(files, ", ")))
+		failed = append(failed, Failure{Package: d, Test: "gofmt",
+			Output: "not as gofmt writes them (run gofmt -w): " + strings.Join(files, ", ")})
 	}
 	sets := [][]string{nil}
 	if len(tags) > 0 {
@@ -123,7 +124,7 @@ func (m *Module) lint(ctx context.Context, run forgekey.Runner, tree, d string,
 			return nil, fmt.Errorf("%s in %s could not be run: %s", name, d, firstLine(r.Err+"\n"+r.Stderr))
 		}
 		if r.Status != 0 {
-			failed = append(failed, buildstep.ConsoleFailure(d, name, r.Stderr+"\n"+r.Stdout))
+			failed = append(failed, Failure{Package: d, Test: name, Output: strings.TrimSpace(r.Stderr + "\n" + r.Stdout)})
 		}
 	}
 	return failed, nil
@@ -132,6 +133,9 @@ func (m *Module) lint(ctx context.Context, run forgekey.Runner, tree, d string,
 // lintAll lints each directory, up to m.parallel() at once like the level's tests; the failures join in directory order
 // and the error is the first directory's, so the answer does not depend on which ended first (issue 1930).
 func (m *Module) lintAll(ctx context.Context, run forgekey.Runner, tree string, dirs []string, env func(d string) []string) ([]Failure, error) {
+	// The ask's phases say it (issue 1890): lint of the directories, then their tests.
+	buildstep.Phase(ctx, fmt.Sprintf("unit: lint of %d directories", len(dirs)))
+	defer buildstep.Phase(ctx, fmt.Sprintf("unit: tests of %d directories", len(dirs)))
 	type answer struct {
 		failed []Failure
 		err    error

modules/mesh-build-go/cmd/mesh-build-go/package_cause_test.go

@@ -0,0 +1,125 @@
+package main
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+// A failure that is not one test's assertion carries its real cause (issue 1901, its third meeting: a try of
+// mesh-controller kept only "PASS" for a package that stopped half-way). Each fixture is the real `go test -json` of a
+// throwaway package (testdata/captured/README).
+func TestAFailureThatIsNotAnAssertionCarriesItsRealCause(t *testing.T) { // 1901/AC4
+	cases := []struct {
+		fixture string
+		test    string   // the test the failure names; "" for none
+		cause   []string // what the cause holds
+	}{
+		{"panicking", "TestPanics", []string{"panic: assignment to entry in nil map"}},
+		{"timeout", "TestWaitsForever", []string{"panic: test timed out after 2s", "TestWaitsForever"}},
+		{"deeptimeout", "TestHoldsTheSeat, TestWaitsForTheBus", []string{"panic: test timed out after 2s", "TestHoldsTheSeat", "TestWaitsForTheBus"}},
+		{"buildfail", "", []string{`cannot use "seat" (untyped string constant) as int value`}},
+		{"exiting", "TestExits", []string{"exited", "TestExits"}},
+		{"killed", "TestKilled", []string{"signal: killed"}},
+		{"passthenfail", "", []string{"panic: the bus closed after the tests: nats: connection closed"}},
+		{"mainexit", "", []string{"passed", "exited"}},
+		{"race", "TestRacesOnTheSeat", []string{"DATA RACE", "Write at", "example.com/race.TestRacesOnTheSeat.func1()", "p_test.go:13", "created at example.com/race.TestRacesOnTheSeat()"}},
+		{"racemain", "", []string{"DATA RACE", "Write at", "example.com/racemain.TestMain.func1()", "p_test.go:15", "created at example.com/racemain.TestMain()"}},
+	}
+	for _, c := range cases {
+		t.Run(c.fixture, func(t *testing.T) {
+			raw, err := os.ReadFile("testdata/captured/go-test-json-pkg-" + c.fixture + ".jsonl")
+			if err != nil {
+				t.Fatal(err)
+			}
+			res := &TestResult{}
+			rd := newReader(res, ".")
+			rd.read(string(raw))
+			rd.finish()
+			if len(res.Failed) != 1 {
+				t.Fatalf("failures = %+v, want one", res.Failed)
+			}
+			f := res.Failed[0]
+			if f.Test != c.test {
+				t.Errorf("1901/AC4: the failure names test %q, want %q", f.Test, c.test)
+			}
+			for _, want := range c.cause {
+				if !strings.Contains(f.Cause, want) {
+					t.Errorf("1901/AC4: cause = %q, want it to hold %q", f.Cause, want)
+				}
+			}
+			if len(f.Cause) > outputLineBytes+3 {
+				t.Errorf("1901/AC4: cause holds %d bytes, over the line bound %d", len(f.Cause), outputLineBytes)
+			}
+			// Never a "PASS" or "ok" line as a failure's words, and the first line of the output, all an older
+			// checker reads, is the cause.
+			for _, l := range strings.Split(f.Output, "\n") {
+				if l = strings.TrimSpace(l); l == "PASS" || strings.HasPrefix(l, "ok ") || strings.HasPrefix(l, "ok\t") {
+					t.Errorf("1901/AC4: the output keeps the line %q: %q", l, f.Output)
+				}
+			}
+			if first := strings.SplitN(f.Output, "\n", 2)[0]; strings.TrimSpace(first) != strings.TrimSpace(f.Cause) {
+				t.Errorf("1901/AC4: the output starts with %q, want the cause %q", first, f.Cause)
+			}
+		})
+	}
+}
+
+// A package that passes, and a test that fails on its own assertion, keep what they had: no cause is made up for them.
+func TestAnAssertionKeepsItsOwnCause(t *testing.T) { // 1901/AC4
+	raw, err := os.ReadFile("testdata/captured/go-test-json-log-then-fatal.jsonl")
+	if err != nil {
+		t.Fatal(err)
+	}
+	res := &TestResult{}
+	rd := newReader(res, ".")
+	rd.read(string(raw))
+	rd.finish()
+	if len(res.Failed) != 1 || !strings.HasSuffix(res.Failed[0].Cause, "3 subscription(s) derive to a subject no emitter owns:") {
+		t.Errorf("1901/AC4: failures = %+v", res.Failed)
+	}
+}
+
+// go prints the runtime's lines ("panic:", "fatal error:", "signal:", "WARNING: DATA RACE") at column 0: a test's own
+// log line that holds the same words is indented, and is not the cause (review round 1). The fixture is the deeptimeout
+// capture with two log lines of the first running test added: a t.Logf and its indented continuation saying "panic:".
+func TestALoggedPanicIsNotTheCause(t *testing.T) { // 1901/AC4
+	raw, err := os.ReadFile("testdata/captured/go-test-json-pkg-deeptimeout.jsonl")
+	if err != nil {
+		t.Fatal(err)
+	}
+	lines := strings.SplitAfter(string(raw), "\n")
+	added := `{"Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"    p_test.go:9: the child said:\n"}` + "\n" +
+		`{"Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"        panic: child retried and recovered\n"}` + "\n" +
+		`{"Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"        WARNING: DATA RACE\n"}` + "\n"
+	out := strings.Join(lines[:10], "") + added + strings.Join(lines[10:], "")
+	res := &TestResult{}
+	rd := newReader(res, ".")
+	rd.read(out)
+	rd.finish()
+	if len(res.Failed) != 1 || !strings.HasPrefix(res.Failed[0].Cause, "panic: test timed out after 2s") {
+		t.Errorf("1901/AC4: failures = %+v, want the timeout's panic as the cause", res.Failed)
+	}
+}
+
+// A package counts its own skipped tests, so the checker withholds a kept verdict from that package alone (issue 890).
+func TestEachPackageCountsItsOwnSkippedTests(t *testing.T) {
+	log := `{"Action":"run","Package":"m/a","Test":"TestA"}
+{"Action":"skip","Package":"m/a","Test":"TestA","Elapsed":0}
+{"Action":"run","Package":"m/b","Test":"TestB"}
+{"Action":"pass","Package":"m/b","Test":"TestB","Elapsed":0}
+{"Action":"pass","Package":"m/a","Elapsed":0}
+{"Action":"pass","Package":"m/b","Elapsed":0}
+`
+	res := &TestResult{}
+	rd := newReader(res, ".")
+	rd.read(log)
+	rd.finish()
+	got := map[string]int{}
+	for _, p := range res.Packages {
+		got[p.Package] = p.Skipped
+	}
+	if res.Skipped != 1 || got["m/a"] != 1 || got["m/b"] != 0 {
+		t.Errorf("skipped = %d, per package %v, want 1 with m/a 1 and m/b 0", res.Skipped, got)
+	}
+}

modules/mesh-build-go/cmd/mesh-build-go/preview.go

@@ -41,6 +41,9 @@ func (m *Module) merge(ctx context.Context, res *FetchResult, tree, remote, base
 	}
 	res.Base = mr.Base
 	res.Conflicts, res.Merge, res.Changed = mr.Conflicts, mr.Merge, mr.Changed
+	if mr.Merge != "" {
+		res.Programs = &mr.Programs
+	}
 	if res.Merge == "" {
 		return nil
 	}

modules/mesh-build-go/cmd/mesh-build-go/preview_test.go

@@ -77,7 +77,7 @@ func TestFetchWithABaseMergesAndAnswersThePreview(t *testing.T) {
 		t.Fatal(err)
 	}
 	if res.Base != baseSHA || res.Merge != mergeSHA || res.Commit != commitSHA || len(res.Conflicts) != 0 ||
-		strings.Join(res.Changed, ",") != "a.go,modules/m/main.go" {
+		strings.Join(res.Changed, ",") != "a.go,modules/m/main.go" || res.Programs == nil || len(*res.Programs) != 0 { // 1577: a merge says it found no program
 		t.Errorf("result = %s", st.Result)
 	}
 	mt, ok := res.Trees["modules/m"]

modules/mesh-build-go/cmd/mesh-build-go/test.go

@@ -15,7 +15,6 @@ import (
 	"sync"
 	"time"
 
-	"git.novox.be/novox/mesh-sdk/go/buildstep"
 	"git.novox.be/novox/mesh-sdk/go/forgekey"
 )
 
@@ -182,7 +181,7 @@ func (m *Module) runLevel(ctx context.Context, tree string, o levelOpts) (*TestR
 	if err != nil {
 		return nil, err
 	}
-	res := &TestResult{Level: o.level, Packages: []PackageResult{}, Setup: o.setup.Seconds(), Store: o.store, Bus: o.bus, By: buildstep.By("mesh-build-go")}
+	res := &TestResult{Level: o.level, Packages: []PackageResult{}, Setup: o.setup.Seconds(), Store: o.store, Bus: o.bus}
 	byDir, err := packagesByDir(tree, dirs, o.packages)
 	if err != nil {
 		return nil, err
@@ -195,10 +194,10 @@ func (m *Module) runLevel(ctx context.Context, tree string, o levelOpts) (*TestR
 	// The directories that hold a selected package run side by side, up to the bound, each into a result of its own;
 	// the results join in directory order, so the answer does not depend on which ended first (ADR 0536 §3).
 	type dirRun struct {
-		res      *TestResult
+		res   *TestResult
-		r        runAnswer
+		rd    *reader
-		noise    []string
+		r     runAnswer
-		packages int
+		noise []string
 	}
 	var todo []string
 	for _, d := range dirs {
@@ -253,7 +252,9 @@ func (m *Module) runLevel(ctx context.Context, tree string, o levelOpts) (*TestR
 			dr := &runs[i]
 			dr.res = &TestResult{}
 			dr.r = run(ctx, append(m.goEnvFor(filepath.Join(tree, d)), o.env...), "go", args...)
-			dr.noise, dr.packages = readGoTest(dr.res, d, dr.r.Stdout)
+			dr.rd = newReader(dr.res, d)
+			dr.noise = dr.rd.read(dr.r.Stdout)
+			dr.rd.finish()
 		}()
 	}
 	wg.Wait()
@@ -262,7 +263,7 @@ func (m *Module) runLevel(ctx context.Context, tree string, o levelOpts) (*TestR
 	}
 	for i, d := range todo {
 		dr := runs[i]
-		if (dr.r.Status != 0 || dr.r.Err != "") && dr.packages == 0 {
+		if (dr.r.Status != 0 || dr.r.Err != "") && len(dr.rd.pkgs) == 0 {
 			// go test said nothing a test said: it could not run (a go.mod it cannot read, a toolchain it cannot find).
 			return nil, fmt.Errorf("go test in %s: %s", d, firstLine(dr.r.Err+"\n"+strings.Join(dr.noise, "\n")+"\n"+dr.r.Stderr))
 		}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/README

@@ -26,6 +26,14 @@ gunzip and sha256) at origin/main 0205b8f7 on 2026-10-21: directory f8af1d94...d
 055cffc2...428e. The digests above hold the gzip bytes of go1.27.1. The first try of issue 1589 on the merge check's build node answered
 other digests; the tests therefore compare the stream always and the digest only under go1.27.1.
 
-The go-test-json-*.jsonl captures of issue 1901 (2026-10-23 and 2026-10-25) moved to mesh-sdk's conformance kit
+go-test-json-pkg-*.jsonl are the standard output and error of `go test -json -count=1 ./...` (go1.27.3, the timeouts with
-(go/buildstep/conformance/captured/go, with their description) on 2026-10-26, with the reader they test: the build module
+`-timeout 2s`), captured on 2026-10-25 for issue 1901 in throwaway one-file modules that each fail without a test's own
-reads go test -json through buildstep.ReadGoTest and runs the kit (kit_test.go).
+assertion: panicking (a nil map write in TestPanics), timeout (TestWaitsForever sleeps past the timeout), deeptimeout (two
+parallel tests and sixty blocked goroutines past the timeout, so the goroutine dump pushes the panic line out of the last
+4 KB), buildfail (a type error in a test file), exiting (os.Exit(3) in TestExits), killed (TestKilled sends itself SIGKILL),
+passthenfail (TestMain panics in a goroutine after m.Run passed) and mainexit (TestMain exits 2 after m.Run passed: go test
+prints "PASS" and then "FAIL <pkg>").
+go-test-json-pkg-race.jsonl and go-test-json-pkg-racemain.jsonl are the same, with `go test -race -json -count=1 ./...`
+(CGO_ENABLED=1, go1.27.3, 2026-10-25, issue 1901): race (TestRacesOnTheSeat writes a package variable from itself and a
+goroutine) and racemain (TestMain does so after m.Run passed: go test prints "PASS", then the race report and "Found 1
+data race(s)", then "FAIL <pkg>").

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-log-then-fatal.jsonl

@@ -0,0 +1,13 @@
+{"Action":"start","Package":"x"}
+{"Action":"run","Package":"x","Test":"TestThree"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"=== RUN   TestThree\n","OutputType":"frame"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"    a_test.go:4: judged against /var/lib/mesh-build-go-work/id/beside/mesh-catalog as cloned\n"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"    a_test.go:5: 3 subscription(s) derive to a subject no emitter owns:\n","OutputType":"error"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"          a.b.c\n","OutputType":"error-continue"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"          d.e.f\n","OutputType":"error-continue"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"          g.h.i\n","OutputType":"error-continue"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"--- FAIL: TestThree (0.00s)\n","OutputType":"frame"}
+{"Action":"fail","Package":"x","Test":"TestThree","Elapsed":0}
+{"Action":"output","Package":"x","Output":"FAIL\n","OutputType":"frame"}
+{"Action":"output","Package":"x","Output":"FAIL\tx\t0.002s\n","OutputType":"frame"}
+{"Action":"fail","Package":"x","Elapsed":0.002}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-buildfail.jsonl

@@ -0,0 +1,6 @@
+{"ImportPath":"example.com/buildfail [example.com/buildfail.test]","Action":"build-output","Output":"# example.com/buildfail [example.com/buildfail.test]\n"}
+{"ImportPath":"example.com/buildfail [example.com/buildfail.test]","Action":"build-output","Output":"./p_test.go:5:40: cannot use \"seat\" (untyped string constant) as int value in variable declaration\n"}
+{"ImportPath":"example.com/buildfail [example.com/buildfail.test]","Action":"build-fail"}
+{"Time":"2026-10-25T15:34:33.261137737+01:00","Action":"start","Package":"example.com/buildfail"}
+{"Time":"2026-10-25T15:34:33.261255019+01:00","Action":"output","Package":"example.com/buildfail","Output":"FAIL\texample.com/buildfail [build failed]\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.261268099+01:00","Action":"fail","Package":"example.com/buildfail","Elapsed":0,"FailedBuild":"example.com/buildfail [example.com/buildfail.test]"}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-deeptimeout.jsonl

@@ -0,0 +1,417 @@
+{"Time":"2026-10-25T15:35:18.991630993+01:00","Action":"start","Package":"example.com/deeptimeout"}
+{"Time":"2026-10-25T15:35:18.993895188+01:00","Action":"run","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat"}
+{"Time":"2026-10-25T15:35:18.993963909+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"=== RUN   TestHoldsTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.99399484+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"=== PAUSE TestHoldsTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.9939982+01:00","Action":"pause","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat"}
+{"Time":"2026-10-25T15:35:18.99400173+01:00","Action":"run","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus"}
+{"Time":"2026-10-25T15:35:18.99400456+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"=== RUN   TestWaitsForTheBus\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.99400838+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"=== PAUSE TestWaitsForTheBus\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.99401133+01:00","Action":"pause","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus"}
+{"Time":"2026-10-25T15:35:18.99401441+01:00","Action":"cont","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat"}
+{"Time":"2026-10-25T15:35:18.99401704+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"=== CONT  TestHoldsTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.994074141+01:00","Action":"cont","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus"}
+{"Time":"2026-10-25T15:35:18.994102612+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"=== CONT  TestWaitsForTheBus\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:21.00935195+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"panic: test timed out after 2s\n"}
+{"Time":"2026-10-25T15:35:21.00938383+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\trunning tests:\n"}
+{"Time":"2026-10-25T15:35:21.009394391+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t\tTestHoldsTheSeat (2s)\n"}
+{"Time":"2026-10-25T15:35:21.009398021+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t\tTestWaitsForTheBus (2s)\n"}
+{"Time":"2026-10-25T15:35:21.009401801+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009406481+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 81 [running]:\n"}
+{"Time":"2026-10-25T15:35:21.009409911+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.(*M).startAlarm.func1()\n"}
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+{"Time":"2026-10-25T15:35:21.010697641+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010700781+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010704001+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010706611+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010709421+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 58 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010712331+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010715351+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010718431+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010721691+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010724371+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010727362+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 59 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010730592+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010733662+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010736712+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010740162+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010742922+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010745772+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 60 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010752222+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010755402+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010758542+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010761822+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010764592+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010767992+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 61 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010771062+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010774282+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010779382+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010782942+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010785722+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010788573+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 62 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010791893+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010794943+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010798083+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010801683+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010804293+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010807283+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 63 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010810443+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010813553+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010816793+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010820233+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010823063+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010829493+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 64 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010832683+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010835953+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010839223+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010842463+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010845333+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010848423+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 65 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010851663+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010854964+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010858364+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010861714+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010864914+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010867984+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 66 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010870944+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010874114+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010877464+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010880504+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010883144+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010886194+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 67 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010889154+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010892234+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010895524+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010902154+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010904984+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010907984+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 68 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010911064+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010914074+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010917365+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010920505+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.013209581+01:00","Action":"output","Package":"example.com/deeptimeout","Output":"FAIL\texample.com/deeptimeout\t2.021s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:21.013258851+01:00","Action":"fail","Package":"example.com/deeptimeout","Elapsed":2.022}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-exiting.jsonl

@@ -0,0 +1,10 @@
+{"Time":"2026-10-25T15:34:33.768742837+01:00","Action":"start","Package":"example.com/exiting"}
+{"Time":"2026-10-25T15:34:33.773822287+01:00","Action":"run","Package":"example.com/exiting","Test":"TestFine"}
+{"Time":"2026-10-25T15:34:33.773896608+01:00","Action":"output","Package":"example.com/exiting","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.773940319+01:00","Action":"output","Package":"example.com/exiting","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.773945359+01:00","Action":"pass","Package":"example.com/exiting","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:34:33.773952529+01:00","Action":"run","Package":"example.com/exiting","Test":"TestExits"}
+{"Time":"2026-10-25T15:34:33.773956439+01:00","Action":"output","Package":"example.com/exiting","Test":"TestExits","Output":"=== RUN   TestExits\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.773959829+01:00","Action":"output","Package":"example.com/exiting","Test":"TestExits","Output":"    p_test.go:11: closing the store\n"}
+{"Time":"2026-10-25T15:34:33.775158538+01:00","Action":"output","Package":"example.com/exiting","Output":"FAIL\texample.com/exiting\t0.006s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.775186509+01:00","Action":"fail","Package":"example.com/exiting","Elapsed":0.006}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-killed.jsonl

@@ -0,0 +1,7 @@
+{"Time":"2026-10-25T15:34:34.328258934+01:00","Action":"start","Package":"example.com/killed"}
+{"Time":"2026-10-25T15:34:34.331465435+01:00","Action":"run","Package":"example.com/killed","Test":"TestKilled"}
+{"Time":"2026-10-25T15:34:34.331699248+01:00","Action":"output","Package":"example.com/killed","Test":"TestKilled","Output":"=== RUN   TestKilled\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.331853111+01:00","Action":"output","Package":"example.com/killed","Test":"TestKilled","Output":"    p_test.go:10: the kernel is about to kill this\n"}
+{"Time":"2026-10-25T15:34:34.334563213+01:00","Action":"output","Package":"example.com/killed","Test":"TestKilled","Output":"signal: killed\n"}
+{"Time":"2026-10-25T15:34:34.334611114+01:00","Action":"output","Package":"example.com/killed","Output":"FAIL\texample.com/killed\t0.006s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.334627134+01:00","Action":"fail","Package":"example.com/killed","Elapsed":0.006}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-mainexit.jsonl

@@ -0,0 +1,8 @@
+{"Time":"2026-10-25T15:34:35.274953775+01:00","Action":"start","Package":"example.com/mainexit"}
+{"Time":"2026-10-25T15:34:35.278129565+01:00","Action":"run","Package":"example.com/mainexit","Test":"TestFine"}
+{"Time":"2026-10-25T15:34:35.278191516+01:00","Action":"output","Package":"example.com/mainexit","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.278341979+01:00","Action":"output","Package":"example.com/mainexit","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.278351739+01:00","Action":"pass","Package":"example.com/mainexit","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:34:35.278359039+01:00","Action":"output","Package":"example.com/mainexit","Output":"PASS\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.279516487+01:00","Action":"output","Package":"example.com/mainexit","Output":"FAIL\texample.com/mainexit\t0.004s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.279539298+01:00","Action":"fail","Package":"example.com/mainexit","Elapsed":0.005}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-panicking.jsonl

@@ -0,0 +1,27 @@
+{"Time":"2026-10-25T15:34:33.031091436+01:00","Action":"start","Package":"example.com/panicking"}
+{"Time":"2026-10-25T15:34:33.036353279+01:00","Action":"run","Package":"example.com/panicking","Test":"TestBefore"}
+{"Time":"2026-10-25T15:34:33.036441781+01:00","Action":"output","Package":"example.com/panicking","Test":"TestBefore","Output":"=== RUN   TestBefore\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.036568163+01:00","Action":"output","Package":"example.com/panicking","Test":"TestBefore","Output":"--- PASS: TestBefore (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.036609863+01:00","Action":"pass","Package":"example.com/panicking","Test":"TestBefore","Elapsed":0}
+{"Time":"2026-10-25T15:34:33.036641304+01:00","Action":"run","Package":"example.com/panicking","Test":"TestPanics"}
+{"Time":"2026-10-25T15:34:33.036645914+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"=== RUN   TestPanics\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.036698995+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"    p_test.go:8: about to look up the seat\n"}
+{"Time":"2026-10-25T15:34:33.036773996+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"--- FAIL: TestPanics (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.03897418+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"panic: assignment to entry in nil map [recovered, repanicked]\n"}
+{"Time":"2026-10-25T15:34:33.040332172+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\n"}
+{"Time":"2026-10-25T15:34:33.040414493+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"goroutine 8 [running]:\n"}
+{"Time":"2026-10-25T15:34:33.040521475+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"testing.tRunner.func1.2({0x6b8120, 0x6eff80})\n"}
+{"Time":"2026-10-25T15:34:33.040601826+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2125 +0x232\n"}
+{"Time":"2026-10-25T15:34:33.040641947+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"testing.tRunner.func1()\n"}
+{"Time":"2026-10-25T15:34:33.040720648+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2128 +0x329\n"}
+{"Time":"2026-10-25T15:34:33.04083286+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"panic({0x6b8120?, 0x6eff80?})\n"}
+{"Time":"2026-10-25T15:34:33.040912921+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/runtime/panic.go:859 +0x125\n"}
+{"Time":"2026-10-25T15:34:33.040981652+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"example.com/panicking.TestPanics(0x228226cd0488?)\n"}
+{"Time":"2026-10-25T15:34:33.041059903+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/tmp/fix-1901b/panicking/p_test.go:10 +0x53\n"}
+{"Time":"2026-10-25T15:34:33.041132704+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"testing.tRunner(0x228226cd0488, 0x6d5bc8)\n"}
+{"Time":"2026-10-25T15:34:33.041215586+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:34:33.041221966+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"created by testing.(*T).Run in goroutine 1\n"}
+{"Time":"2026-10-25T15:34:33.041225556+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2260 +0x4d4\n"}
+{"Time":"2026-10-25T15:34:33.041984088+01:00","Action":"fail","Package":"example.com/panicking","Test":"TestPanics","Elapsed":0}
+{"Time":"2026-10-25T15:34:33.041996638+01:00","Action":"output","Package":"example.com/panicking","Output":"FAIL\texample.com/panicking\t0.010s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.042044079+01:00","Action":"fail","Package":"example.com/panicking","Elapsed":0.011}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-passthenfail.jsonl

@@ -0,0 +1,15 @@
+{"Time":"2026-10-25T15:34:34.919624192+01:00","Action":"start","Package":"example.com/passthenfail"}
+{"Time":"2026-10-25T15:34:34.922861224+01:00","Action":"run","Package":"example.com/passthenfail","Test":"TestFine"}
+{"Time":"2026-10-25T15:34:34.922932965+01:00","Action":"output","Package":"example.com/passthenfail","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.922969205+01:00","Action":"output","Package":"example.com/passthenfail","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.922979956+01:00","Action":"pass","Package":"example.com/passthenfail","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:34:34.922989416+01:00","Action":"output","Package":"example.com/passthenfail","Output":"PASS\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.925022528+01:00","Action":"output","Package":"example.com/passthenfail","Output":"panic: the bus closed after the tests: nats: connection closed\n"}
+{"Time":"2026-10-25T15:34:34.925043388+01:00","Action":"output","Package":"example.com/passthenfail","Output":"\n"}
+{"Time":"2026-10-25T15:34:34.925046848+01:00","Action":"output","Package":"example.com/passthenfail","Output":"goroutine 20 [running]:\n"}
+{"Time":"2026-10-25T15:34:34.925051338+01:00","Action":"output","Package":"example.com/passthenfail","Output":"example.com/passthenfail.TestMain.func1()\n"}
+{"Time":"2026-10-25T15:34:34.925055878+01:00","Action":"output","Package":"example.com/passthenfail","Output":"\t/tmp/fix-1901b/passthenfail/p_test.go:13 +0x25\n"}
+{"Time":"2026-10-25T15:34:34.925061428+01:00","Action":"output","Package":"example.com/passthenfail","Output":"created by example.com/passthenfail.TestMain in goroutine 1\n"}
+{"Time":"2026-10-25T15:34:34.925065028+01:00","Action":"output","Package":"example.com/passthenfail","Output":"\t/tmp/fix-1901b/passthenfail/p_test.go:13 +0x25\n"}
+{"Time":"2026-10-25T15:34:34.925390203+01:00","Action":"output","Package":"example.com/passthenfail","Output":"FAIL\texample.com/passthenfail\t0.005s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.925402904+01:00","Action":"fail","Package":"example.com/passthenfail","Elapsed":0.006}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-race.jsonl

@@ -0,0 +1,53 @@
+{"Time":"2026-10-25T15:50:42.908557309+01:00","Action":"start","Package":"example.com/race"}
+{"Time":"2026-10-25T15:50:42.924298679+01:00","Action":"run","Package":"example.com/race","Test":"TestBefore"}
+{"Time":"2026-10-25T15:50:42.92438195+01:00","Action":"output","Package":"example.com/race","Test":"TestBefore","Output":"=== RUN   TestBefore\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.924648842+01:00","Action":"output","Package":"example.com/race","Test":"TestBefore","Output":"--- PASS: TestBefore (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.924685133+01:00","Action":"pass","Package":"example.com/race","Test":"TestBefore","Elapsed":0}
+{"Time":"2026-10-25T15:50:42.924728573+01:00","Action":"run","Package":"example.com/race","Test":"TestRacesOnTheSeat"}
+{"Time":"2026-10-25T15:50:42.924733573+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"=== RUN   TestRacesOnTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.92637298+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:42.92641567+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"WARNING: DATA RACE\n"}
+{"Time":"2026-10-25T15:50:42.926444061+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Write at 0x000000833468 by goroutine 10:\n"}
+{"Time":"2026-10-25T15:50:42.926462621+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  example.com/race.TestRacesOnTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:50:42.926467121+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /tmp/fix-1901b/race/p_test.go:13 +0x24\n"}
+{"Time":"2026-10-25T15:50:42.926483061+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"\n"}
+{"Time":"2026-10-25T15:50:42.926509741+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Previous write at 0x000000833468 by goroutine 9:\n"}
+{"Time":"2026-10-25T15:50:42.926530142+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  example.com/race.TestRacesOnTheSeat()\n"}
+{"Time":"2026-10-25T15:50:42.926534952+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /tmp/fix-1901b/race/p_test.go:14 +0x30\n"}
+{"Time":"2026-10-25T15:50:42.926550462+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.tRunner()\n"}
+{"Time":"2026-10-25T15:50:42.926554612+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2195 +0x21c\n"}
+{"Time":"2026-10-25T15:50:42.926571142+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*T).Run.gowrap1()\n"}
+{"Time":"2026-10-25T15:50:42.926575812+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2260 +0x38\n"}
+{"Time":"2026-10-25T15:50:42.926592202+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"\n"}
+{"Time":"2026-10-25T15:50:42.926607792+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Goroutine 10 (running) created at:\n"}
+{"Time":"2026-10-25T15:50:42.926624292+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  example.com/race.TestRacesOnTheSeat()\n"}
+{"Time":"2026-10-25T15:50:42.926628923+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /tmp/fix-1901b/race/p_test.go:13 +0x24\n"}
+{"Time":"2026-10-25T15:50:42.926643853+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.tRunner()\n"}
+{"Time":"2026-10-25T15:50:42.926648103+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2195 +0x21c\n"}
+{"Time":"2026-10-25T15:50:42.926674843+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*T).Run.gowrap1()\n"}
+{"Time":"2026-10-25T15:50:42.926680673+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2260 +0x38\n"}
+{"Time":"2026-10-25T15:50:42.926695433+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"\n"}
+{"Time":"2026-10-25T15:50:42.926711063+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Goroutine 9 (running) created at:\n"}
+{"Time":"2026-10-25T15:50:42.926726614+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*T).Run()\n"}
+{"Time":"2026-10-25T15:50:42.926730814+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2260 +0xb12\n"}
+{"Time":"2026-10-25T15:50:42.926746484+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.runTests.func1()\n"}
+{"Time":"2026-10-25T15:50:42.926750764+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2744 +0x84\n"}
+{"Time":"2026-10-25T15:50:42.926765354+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.tRunner()\n"}
+{"Time":"2026-10-25T15:50:42.926769844+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2195 +0x21c\n"}
+{"Time":"2026-10-25T15:50:42.926791794+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.runTests()\n"}
+{"Time":"2026-10-25T15:50:42.926796704+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2742 +0x9e9\n"}
+{"Time":"2026-10-25T15:50:42.926811544+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*M).Run()\n"}
+{"Time":"2026-10-25T15:50:42.926816694+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2602 +0xf44\n"}
+{"Time":"2026-10-25T15:50:42.926831695+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  main.main()\n"}
+{"Time":"2026-10-25T15:50:42.926835935+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      _testmain.go:50 +0x164\n"}
+{"Time":"2026-10-25T15:50:42.926850905+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:42.935320241+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"    testing.go:1867: race detected during execution of test\n","OutputType":"error"}
+{"Time":"2026-10-25T15:50:42.935520113+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"--- FAIL: TestRacesOnTheSeat (0.01s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.935592973+01:00","Action":"fail","Package":"example.com/race","Test":"TestRacesOnTheSeat","Elapsed":0.01}
+{"Time":"2026-10-25T15:50:42.935722225+01:00","Action":"run","Package":"example.com/race","Test":"TestAfter"}
+{"Time":"2026-10-25T15:50:42.935728845+01:00","Action":"output","Package":"example.com/race","Test":"TestAfter","Output":"=== RUN   TestAfter\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.935995928+01:00","Action":"output","Package":"example.com/race","Test":"TestAfter","Output":"--- PASS: TestAfter (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.936006328+01:00","Action":"pass","Package":"example.com/race","Test":"TestAfter","Elapsed":0}
+{"Time":"2026-10-25T15:50:42.936009978+01:00","Action":"output","Package":"example.com/race","Output":"FAIL\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.937730745+01:00","Action":"output","Package":"example.com/race","Output":"FAIL\texample.com/race\t0.028s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.937802066+01:00","Action":"fail","Package":"example.com/race","Elapsed":0.029}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-racemain.jsonl

@@ -0,0 +1,27 @@
+{"Time":"2026-10-25T15:50:43.551701745+01:00","Action":"start","Package":"example.com/racemain"}
+{"Time":"2026-10-25T15:50:43.570709708+01:00","Action":"run","Package":"example.com/racemain","Test":"TestFine"}
+{"Time":"2026-10-25T15:50:43.570806059+01:00","Action":"output","Package":"example.com/racemain","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:43.57085525+01:00","Action":"output","Package":"example.com/racemain","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:43.57086149+01:00","Action":"pass","Package":"example.com/racemain","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:50:43.57086974+01:00","Action":"output","Package":"example.com/racemain","Output":"PASS\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:43.572155623+01:00","Action":"output","Package":"example.com/racemain","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:43.572168083+01:00","Action":"output","Package":"example.com/racemain","Output":"WARNING: DATA RACE\n"}
+{"Time":"2026-10-25T15:50:43.572171933+01:00","Action":"output","Package":"example.com/racemain","Output":"Write at 0x000000836428 by goroutine 9:\n"}
+{"Time":"2026-10-25T15:50:43.572176703+01:00","Action":"output","Package":"example.com/racemain","Output":"  example.com/racemain.TestMain.func1()\n"}
+{"Time":"2026-10-25T15:50:43.572180053+01:00","Action":"output","Package":"example.com/racemain","Output":"      /tmp/fix-1901b/racemain/p_test.go:15 +0x24\n"}
+{"Time":"2026-10-25T15:50:43.572184923+01:00","Action":"output","Package":"example.com/racemain","Output":"\n"}
+{"Time":"2026-10-25T15:50:43.572189613+01:00","Action":"output","Package":"example.com/racemain","Output":"Previous write at 0x000000836428 by main goroutine:\n"}
+{"Time":"2026-10-25T15:50:43.572192993+01:00","Action":"output","Package":"example.com/racemain","Output":"  example.com/racemain.TestMain()\n"}
+{"Time":"2026-10-25T15:50:43.572198573+01:00","Action":"output","Package":"example.com/racemain","Output":"      /tmp/fix-1901b/racemain/p_test.go:16 +0x44\n"}
+{"Time":"2026-10-25T15:50:43.572202433+01:00","Action":"output","Package":"example.com/racemain","Output":"  main.main()\n"}
+{"Time":"2026-10-25T15:50:43.572205623+01:00","Action":"output","Package":"example.com/racemain","Output":"      _testmain.go:48 +0x171\n"}
+{"Time":"2026-10-25T15:50:43.572208443+01:00","Action":"output","Package":"example.com/racemain","Output":"\n"}
+{"Time":"2026-10-25T15:50:43.572211573+01:00","Action":"output","Package":"example.com/racemain","Output":"Goroutine 9 (running) created at:\n"}
+{"Time":"2026-10-25T15:50:43.572214803+01:00","Action":"output","Package":"example.com/racemain","Output":"  example.com/racemain.TestMain()\n"}
+{"Time":"2026-10-25T15:50:43.572218043+01:00","Action":"output","Package":"example.com/racemain","Output":"      /tmp/fix-1901b/racemain/p_test.go:15 +0x37\n"}
+{"Time":"2026-10-25T15:50:43.572225414+01:00","Action":"output","Package":"example.com/racemain","Output":"  main.main()\n"}
+{"Time":"2026-10-25T15:50:43.572228654+01:00","Action":"output","Package":"example.com/racemain","Output":"      _testmain.go:48 +0x171\n"}
+{"Time":"2026-10-25T15:50:43.572231664+01:00","Action":"output","Package":"example.com/racemain","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:44.581262249+01:00","Action":"output","Package":"example.com/racemain","Output":"Found 1 data race(s)\n"}
+{"Time":"2026-10-25T15:50:44.584693204+01:00","Action":"output","Package":"example.com/racemain","Output":"FAIL\texample.com/racemain\t1.031s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:44.584737425+01:00","Action":"fail","Package":"example.com/racemain","Elapsed":1.033}

modules/mesh-build-go/cmd/mesh-build-go/testdata/captured/go-test-json-pkg-timeout.jsonl

@@ -0,0 +1,43 @@
+{"Time":"2026-10-25T15:34:36.049580618+01:00","Action":"start","Package":"example.com/timeout"}
+{"Time":"2026-10-25T15:34:36.053250986+01:00","Action":"run","Package":"example.com/timeout","Test":"TestQuick"}
+{"Time":"2026-10-25T15:34:36.053354018+01:00","Action":"output","Package":"example.com/timeout","Test":"TestQuick","Output":"=== RUN   TestQuick\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:36.053459789+01:00","Action":"output","Package":"example.com/timeout","Test":"TestQuick","Output":"--- PASS: TestQuick (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:36.05348499+01:00","Action":"pass","Package":"example.com/timeout","Test":"TestQuick","Elapsed":0}
+{"Time":"2026-10-25T15:34:36.0535114+01:00","Action":"run","Package":"example.com/timeout","Test":"TestWaitsForever"}
+{"Time":"2026-10-25T15:34:36.05351549+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"=== RUN   TestWaitsForever\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:36.053567451+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"    p_test.go:11: waiting for the bus\n"}
+{"Time":"2026-10-25T15:34:38.064693307+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"panic: test timed out after 2s\n"}
+{"Time":"2026-10-25T15:34:38.06487122+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\trunning tests:\n"}
+{"Time":"2026-10-25T15:34:38.06491684+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t\tTestWaitsForever (2s)\n"}
+{"Time":"2026-10-25T15:34:38.065034382+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\n"}
+{"Time":"2026-10-25T15:34:38.065108573+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"goroutine 33 [running]:\n"}
+{"Time":"2026-10-25T15:34:38.065154754+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.(*M).startAlarm.func1()\n"}
+{"Time":"2026-10-25T15:34:38.065386208+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2961 +0x34a\n"}
+{"Time":"2026-10-25T15:34:38.065431878+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"created by time.goFunc\n"}
+{"Time":"2026-10-25T15:34:38.0655151+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/time/sleep.go:182 +0x2d\n"}
+{"Time":"2026-10-25T15:34:38.06553471+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\n"}
+{"Time":"2026-10-25T15:34:38.065847805+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"goroutine 1 [chan receive]:\n"}
+{"Time":"2026-10-25T15:34:38.066038298+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.(*T).Run(0x3a0209bc8008, {0x5580aa?, 0x3a0209a9caa0?}, 0x6d5b10)\n"}
+{"Time":"2026-10-25T15:34:38.066047488+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2268 +0x4f2\n"}
+{"Time":"2026-10-25T15:34:38.066051368+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.runTests.func1(0x3a0209bc8008)\n"}
+{"Time":"2026-10-25T15:34:38.066056128+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2744 +0x37\n"}
+{"Time":"2026-10-25T15:34:38.066059478+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.tRunner(0x3a0209bc8008, 0x3a0209a9cbc8)\n"}
+{"Time":"2026-10-25T15:34:38.066064958+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:34:38.066069599+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.runTests({0x559017, 0x13}, {0x559017, 0x13}, 0x3a0209b8e0d8, {0x6f19f0, 0x2, 0x2}, {0xc2afa2bf832a3f56, 0x773908b5, ...})\n"}
+{"Time":"2026-10-25T15:34:38.066083309+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2742 +0x510\n"}
+{"Time":"2026-10-25T15:34:38.066086879+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.(*M).Run(0x3a0209b8c1e0)\n"}
+{"Time":"2026-10-25T15:34:38.066090269+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2602 +0x6af\n"}
+{"Time":"2026-10-25T15:34:38.066093429+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"main.main()\n"}
+{"Time":"2026-10-25T15:34:38.066097569+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t_testmain.go:48 +0x9b\n"}
+{"Time":"2026-10-25T15:34:38.066100639+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\n"}
+{"Time":"2026-10-25T15:34:38.066103769+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"goroutine 20 [sleep]:\n"}
+{"Time":"2026-10-25T15:34:38.066106969+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"time.Sleep(0xdf8475800)\n"}
+{"Time":"2026-10-25T15:34:38.066110279+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/runtime/time.go:368 +0x165\n"}
+{"Time":"2026-10-25T15:34:38.066113639+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"example.com/timeout.TestWaitsForever(0x3a0209bc8488?)\n"}
+{"Time":"2026-10-25T15:34:38.066117109+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/tmp/fix-1901b/timeout/p_test.go:12 +0x48\n"}
+{"Time":"2026-10-25T15:34:38.066120239+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.tRunner(0x3a0209bc8488, 0x6d5b10)\n"}
+{"Time":"2026-10-25T15:34:38.066123509+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:34:38.066126839+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"created by testing.(*T).Run in goroutine 1\n"}
+{"Time":"2026-10-25T15:34:38.066129989+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2260 +0x4d4\n"}
+{"Time":"2026-10-25T15:34:38.066986453+01:00","Action":"output","Package":"example.com/timeout","Output":"FAIL\texample.com/timeout\t2.017s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:38.067002113+01:00","Action":"fail","Package":"example.com/timeout","Elapsed":2.017}

modules/mesh-build-go/files/settings.json

@@ -1,3 +1,5 @@
 {
-  "capacity": "shanks=3,ace=2,g14=0,novox=0"
+  "capacity": "shanks=3,ace=2,g14=0,novox=0",
+  "cores-per-step": 6,
+  "build-hours": ""
 }

modules/mesh-build-go/go.mod

@@ -3,7 +3,7 @@ module meshbuildgo
 go 1.26.0
 
 require (
-	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026191742-47a66e3c0dc8
+	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536
 	github.com/distribution/distribution/v3 v3.1.2
 	github.com/nats-io/nats-server/v2 v2.11.17
 	github.com/nats-io/nats.go v1.54.0

modules/mesh-build-go/go.sum

@@ -1,5 +1,5 @@
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026191742-47a66e3c0dc8 h1:6OaUWIjcpXOtnu70zeqH0VEaF4oGykrxGpFkaFOzCmY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536 h1:+SoDdDXF7Tgj38WP4kRpUSps6DJVl6P+w5u/KfdtwnQ=
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026191742-47a66e3c0dc8/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
 github.com/alicebob/miniredis/v2 v2.35.0 h1:QwLphYqCEAo1eu1TqPRN2jgVMPBweeQcR21jeqDCONI=
 github.com/alicebob/miniredis/v2 v2.35.0/go.mod h1:TcL7YfarKPGDAthEtl5NBeHZfeUQj6OXMm/+iu5cLMM=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op h1:Z/MZK75wC/NSrkgqeNIa7jexam9uWzhLmFTSCPI/kn0=

modules/mesh-build-go/module.json

@@ -29,6 +29,18 @@
       "description": "How many asks of the Go build seat this module runs at once on each node, as node=asks pairs separated by commas, such as shanks=3,ace=2 (novox/hq ADR 0525 §5); a node set to 0 pulls nothing, a node not named runs one at a time. The control-node and the laptop build nothing.",
       "pattern": "|[a-z0-9_-]+=[0-9]+(,[a-z0-9_-]+=[0-9]+)*",
       "default": "shanks=3,ace=2,g14=0,novox=0"
+    },
+    "build-hours": {
+      "type": "string",
+      "description": "When each node may take this module's build asks, as node=HH:MM-HH:MM pairs in the node's local time, separated by commas, such as g14=18:00-06:00 (an end before its start crosses midnight). Outside its window a node takes no new step and finishes the ones it runs; a node not named, or an empty value, builds at any hour. The operator, 2026-10-26: g14 builds only outside office hours.",
+      "pattern": "|[a-z0-9_-]+=([01][0-9]|2[0-3]):[0-5][0-9]-([01][0-9]|2[0-3]):[0-5][0-9](,[a-z0-9_-]+=([01][0-9]|2[0-3]):[0-5][0-9]-([01][0-9]|2[0-3]):[0-5][0-9])*",
+      "default": ""
+    },
+    "cores-per-step": {
+      "type": "number",
+      "description": "How many processors one Go step of this module needs (a full check of a large repository takes what it is given: three at about 4 cores each ran past the 30-minute step bound on 2026-10-26). The capacity above is an upper bound: on each node the module runs at most floor(the cores of its build slice's CPU quota / this) steps at once, the quota read live from its cgroup (issue 1806), so a lowered build CPU share never starves its steps. Above 0.",
+      "minimum": 0.1,
+      "default": 6
     }
   },
   "tools": [
@@ -107,7 +119,7 @@
       "path": "${dir:state}/settings.json",
       "mode": "0600",
       "owner": "mesh-build-go",
-      "takes-config": ["capacity"],
+      "takes-config": ["capacity", "cores-per-step", "build-hours"],
       "merge": "json",
       "template": "files/settings.json"
     },

modules/mesh-build-image/README.md

@@ -24,8 +24,9 @@ The Dockerfile's steps may use the network (ADR 0487 §6); nothing a step can re
 
 - `build_image_fetch` fetches a commit over SSH into a workspace (a base commit makes the merge preview, as the other
   build modules' fetch). Long: answers a step id and ends on its key in `steps`.
-- `build_image_build` builds one image artifact: `buildah bud` with the Dockerfile of the module's directory as file
+- `build_image_build` builds one image artifact: `buildah bud` with the Dockerfile `from` names (in the module's
-  and context, `--target`, and the images `build.on` pins as `--build-arg`. Answers the image's digest. With
+  directory or a subdirectory of it) as file and the module's own directory as context, so a COPY names paths from the
+  module's root (issue 1703), `--target`, and the images `build.on` pins as `--build-arg`. Answers the image's digest. With
   `publish: true` (a merged trunk commit only) the module's own process then pushes it to the registry under
   `<module>/<artifact>:<tag of its own>` (the first 12 hex digits of the digest unless the call gives one), waiting out
   a registry held still, and the key carries the digest the registry serves and the reference pinned by it. Without

modules/mesh-build-image/cmd/mesh-build-image/asks.go

@@ -40,9 +40,17 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
 	// The capacity's own change wakes the puller (issue 1887): the runtime's watch of the config value as mesh-config
 	// resolved it; the settings file is read only when that watch cannot start. A test's Capacity is its own.
 	var watch func(string, func(stdio.ProvisionChange) error) error
+	// And the CPU bounds it (issue 1806's follow-up): the configured capacity is an upper bound, the node's build slice
+	// gives floor(its quota's cores / the module's cores-per-step) at once, read live; a test judges by its own Capacity.
+	// And the node's build hours (the operator, 2026-10-26: g14 builds only from 18:00 to 06:00): outside them it takes
+	// nothing new.
+	var cores func() float64
+	var hours func() (*buildstep.BuildWindow, string)
 	if capacity == nil {
+		hours = buildstep.NodeBuildHours(m.Settings, m.Node, m.Say)
 		capacity = buildstep.NodeCapacity(m.Settings, buildstep.DefaultCapacities, m.Node, m.Say)
 		watch = buildstep.WatchConfigServed
+		cores = buildstep.NodeCoresPerStep(m.Settings, buildstep.DefaultCoresPerStep[delivery.AskImage], m.Say)
 	}
 	ask := m.askSteps(steps)
 	var load func(string) ([]byte, error)
@@ -50,7 +58,7 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
 		load = func(key string) ([]byte, error) { return m.ReadPauses.Get(key) }
 	}
 	return &buildstep.Puller{Source: source, Language: delivery.AskImage, Node: m.Node, Put: m.Steps, PausePut: m.Pauses, Load: load,
-		Capacity: capacity, WatchConfig: watch, Logf: m.Say,
+		Capacity: capacity, WatchConfig: watch, CoresPerStep: cores, BuildHours: hours, Logf: m.Say,
 		Run: func(ctx context.Context, a delivery.StepAsk) (any, error) {
 			if err := m.Check(ctx); err != nil {
 				return nil, err

modules/mesh-build-image/cmd/mesh-build-image/build.go

@@ -55,18 +55,18 @@ func (m *Module) buildTool() StepTool {
 }
 
 // unsupportedImage says why this module does not build the artifact, or "" when it does. It is the one place that
-// knows which image forms are out: ADR 0487 §1 takes the Dockerfile's directory as the build context and the base
+// knows which image forms are out: ADR 0487 §1 builds from the module's own directory (the build context) and the base
 // from the Dockerfile or an image pinned in `build.on`, so a context that is another repository and a base that is
 // another module's artifact are not built (the lead's decision for R4c-9, which retires them with build-agent at R4g).
 func unsupportedImage(manifest catalogue.Manifest, a catalogue.Artifact) string {
 	if a.Context != nil {
-		return fmt.Sprintf("the image %s of %s builds with the repository %s as its context; mesh-build-image takes the Dockerfile's directory as the build context (ADR 0487 §1) and does not build a whole repository",
+		return fmt.Sprintf("the image %s of %s builds with the repository %s as its context; mesh-build-image takes the module's own directory as the build context (ADR 0487 §1) and does not build another repository",
 			a.Name, manifest.Module, a.Context.Repository)
 	}
 	if manifest.Build != nil {
 		for _, on := range manifest.Build.On {
 			if on.Module != "" {
-				return fmt.Sprintf("the image %s of %s stands on the artifact %s of the module %s through the build argument %s; mesh-build-image builds only from the Dockerfile's directory and an image pinned in build.on (ADR 0487 §1)",
+				return fmt.Sprintf("the image %s of %s stands on the artifact %s of the module %s through the build argument %s; mesh-build-image builds only from the module's own directory and an image pinned in build.on (ADR 0487 §1)",
 					a.Name, manifest.Module, on.Artifact, on.Module, on.Arg)
 			}
 		}
@@ -183,8 +183,14 @@ func (m *Module) build(ctx context.Context, args map[string]any) (any, error) {
 	return m.push(ctx, workspace, manifest.Module, local, res, tag)
 }
 
-// dockerfileOf is the Dockerfile an artifact's `from` names and the build context: the directory it lies in. It must
+// dockerfileOf is the Dockerfile an artifact's `from` names and the build context: the module's own directory, the
-// be a regular file inside the module's own directory (checks/imageplace holds the catalogue to the same).
+// one its manifest lies in, whichever subdirectory the Dockerfile sits in. `from` is a path relative to that
+// directory, and so is every COPY of the Dockerfile: a recipe in a subdirectory (photos' admin-client/Dockerfile
+// copies admin-client/... and client-server/serve.mjs) builds as build-agent built it, and as the fingerprint reads
+// the module's whole directory as its build source. Taking the Dockerfile's own directory instead failed every such
+// COPY with `copier: stat ... no such file or directory` (issue 1703, 2026-10-26). The context never leaves the module's
+// directory, so a module's build reads no other module's files. The Dockerfile must be a regular file inside that
+// directory (checks/imageplace holds the catalogue to the same).
 func dockerfileOf(moduleDir, from string) (dockerfile, contextDir string, err error) {
 	clean := filepath.Clean(filepath.FromSlash(strings.TrimSpace(from)))
 	if from == "" || filepath.IsAbs(clean) || clean == ".." || strings.HasPrefix(clean, ".."+string(filepath.Separator)) {
@@ -195,7 +201,7 @@ func dockerfileOf(moduleDir, from string) (dockerfile, contextDir string, err er
 	if err != nil || !info.Mode().IsRegular() {
 		return "", "", fmt.Errorf("%q is not a file in the module's directory", from)
 	}
-	return dockerfile, filepath.Dir(dockerfile), nil
+	return dockerfile, moduleDir, nil
 }
 
 // localName names the image in buildah's store: one name for each artifact of a workspace.

modules/mesh-build-image/cmd/mesh-build-image/build_test.go

@@ -94,7 +94,7 @@ func TestBuildRunsBuildahRootlessAndAnswersTheDigest(t *testing.T) {
 		}
 	}
 	if !strings.HasSuffix(bud[0].line, " "+dir) {
-		t.Errorf("the context is not the Dockerfile's directory:\n%s", bud[0].line)
+		t.Errorf("the context is not the module's directory:\n%s", bud[0].line)
 	}
 	for _, c := range f.calls {
 		if c.name != "buildah" {
@@ -122,6 +122,43 @@ func TestBuildRunsBuildahRootlessAndAnswersTheDigest(t *testing.T) {
 	}
 }
 
+// Issue 1703, 2026-10-26: a Dockerfile in a subdirectory of the module builds with the module's directory as its
+// context, so its COPY of a path from the module's root (photos' admin-client/Dockerfile copies admin-client/... and
+// client-server/serve.mjs) finds it; the Dockerfile's own directory as the context failed with `copier: stat
+// "/admin-client/package.json": no such file or directory`.
+func TestBuildContextIsTheModulesDirectoryForADockerfileInASubdirectory(t *testing.T) {
+	m, f, states := setup(t, func(s string) string {
+		return strings.Replace(s, `"from": "Dockerfile"`, `"from": "admin-client/Dockerfile"`, 1)
+	})
+	dir := filepath.Join(m.Work, "ws1", "tree", "modules", "demo")
+	for name, body := range map[string]string{
+		"admin-client/Dockerfile":   "ARG DEMO_BASE\nFROM ${DEMO_BASE} AS final\nCOPY admin-client/package.json client-server/serve.mjs /\n",
+		"admin-client/package.json": "{}\n",
+		"client-server/serve.mjs":   "\n",
+	} {
+		if err := os.MkdirAll(filepath.Dir(filepath.Join(dir, name)), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(filepath.Join(dir, name), []byte(body), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+	_, st := runBuild(t, m, states, nil)
+	if st.State != delivery.StepPassed {
+		t.Fatalf("step = %+v", st)
+	}
+	bud := f.called("bud")
+	if len(bud) != 1 {
+		t.Fatalf("buildah bud ran %d times", len(bud))
+	}
+	if !strings.Contains(bud[0].line, "--file "+dir+"/admin-client/Dockerfile ") {
+		t.Errorf("the Dockerfile is not the subdirectory's:\n%s", bud[0].line)
+	}
+	if !strings.HasSuffix(bud[0].line, " "+dir) {
+		t.Errorf("the context is not the module's directory, so admin-client/ and client-server/ are out of reach:\n%s", bud[0].line)
+	}
+}
+
 // 1703c, issue 1703: a failing Dockerfile step fails the step, its reason saying buildah's error from stderr, never the
 // last STEP line buildah writes on stdout; nothing is pushed.
 func TestBuildFailsWithBuildahsError(t *testing.T) {
@@ -178,7 +215,7 @@ func TestBuildRefusesAnImageWithARepositoryContextOrAModuleBase(t *testing.T) {
 	}{
 		"context": {func(s string) string {
 			return strings.Replace(s, `"target": "final"`, `"target": "final", "context": {"seat": "git", "repository": "novox/mesh-controller"}`, 1)
-		}, []string{"novox/mesh-controller", "Dockerfile's directory", "ADR 0487"}},
+		}, []string{"novox/mesh-controller", "module's own directory", "ADR 0487"}},
 		"module base": {func(s string) string {
 			return strings.Replace(s, `"image": "docker.io/library/busybox@sha256:0000000000000000000000000000000000000000000000000000000000000001"`, `"module": "mesh-sdk", "artifact": "lib"`, 1)
 		}, []string{"artifact lib of the module mesh-sdk", "DEMO_BASE"}},

modules/mesh-build-image/cmd/mesh-build-image/cpu.go

@@ -15,6 +15,8 @@ import (
 func (m *Module) cpuLimits() buildcpu.Limits {
 	slots := 1
 	switch {
+	case m.Held != nil:
+		slots = m.Held.CapacityNow() // the capacity the puller judges by, bounded by the node's build slice
 	case m.Capacity != nil:
 		slots = m.Capacity()
 	case m.Settings != "":
@@ -32,5 +34,9 @@ func (m *Module) threadEnv() []string {
 // cpuStatus is what the status tool says of it: the limits a step is given, and what the kernel holds this runtime
 // to (its unit and its slice), read from its cgroup rather than assumed.
 func (m *Module) cpuStatus() map[string]any {
-	return map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
+	out := map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
+	if m.Held != nil {
+		out["capacity"] = m.Held.CapacityDetail() // the capacity judged by and why (issue 1806's follow-up)
+	}
+	return out
 }

modules/mesh-build-image/cmd/mesh-build-image/fetch.go

@@ -31,13 +31,15 @@ const ForgeAlias = "mesh-forge"
 // files in conflict, the paths the merge changes and the tree of each module directory). A head that does not
 // merge cleanly is an answer: Merge is empty, Conflicts names the files, and the workspace is left at the trunk.
 type FetchResult struct {
-	Workspace string                          `json:"workspace"`
+	Workspace string   `json:"workspace"`
-	Commit    string                          `json:"commit"`
+	Commit    string   `json:"commit"`
-	Base      string                          `json:"base,omitempty"`
+	Base      string   `json:"base,omitempty"`
-	Merge     string                          `json:"merge,omitempty"`
+	Merge     string   `json:"merge,omitempty"`
-	Conflicts []string                        `json:"conflicts,omitempty"`
+	Conflicts []string `json:"conflicts,omitempty"`
-	Changed   []string                        `json:"changed,omitempty"`
+	Changed   []string `json:"changed,omitempty"`
-	Trees     map[string]buildstep.ModuleTree `json:"trees,omitempty"`
+	// Programs are the changed files that are compiled programs (issue 1577); a merge answers it, a pointer to an empty list when there are none, absent for a fetch that made no merge.
+	Programs *[]buildstep.Program            `json:"programs,omitempty"`
+	Trees    map[string]buildstep.ModuleTree `json:"trees,omitempty"`
 }
 
 func (m *Module) fetchTool() StepTool {
@@ -127,6 +129,9 @@ func (m *Module) merge(ctx context.Context, res *FetchResult, tree, remote, base
 	}
 	res.Base = mr.Base
 	res.Conflicts, res.Merge, res.Changed = mr.Conflicts, mr.Merge, mr.Changed
+	if mr.Merge != "" {
+		res.Programs = &mr.Programs
+	}
 	if res.Merge == "" {
 		return nil
 	}

modules/mesh-build-image/files/settings.json

@@ -1,3 +1,5 @@
 {
-  "capacity": "shanks=3,ace=2,g14=0,novox=0"
+  "capacity": "shanks=3,ace=2,g14=0,novox=0",
+  "cores-per-step": 2,
+  "build-hours": ""
 }

modules/mesh-build-image/go.mod

@@ -3,7 +3,7 @@ module meshbuildimage
 go 1.26.0
 
 require (
-	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026142629-ff81bdf8cc8f
+	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536
 	github.com/nats-io/nats-server/v2 v2.11.17
 	github.com/nats-io/nats.go v1.54.0
 )

modules/mesh-build-image/go.sum

@@ -1,5 +1,5 @@
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026142629-ff81bdf8cc8f h1:GYLCvz2x+JNUOTbXzyh2QwzX0sTzvRlXR7lGocWjk3A=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536 h1:+SoDdDXF7Tgj38WP4kRpUSps6DJVl6P+w5u/KfdtwnQ=
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026142629-ff81bdf8cc8f/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op h1:Z/MZK75wC/NSrkgqeNIa7jexam9uWzhLmFTSCPI/kn0=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op/go.mod h1:FQyySiasQQM8735Ddel3MRojmy4dA1IqCeyJ5jmPMbI=
 github.com/google/go-tpm v0.9.8 h1:slArAR9Ft+1ybZu0lBwpSmpwhRXaa85hWtMinMyRAWo=

modules/mesh-build-image/module.json

@@ -24,6 +24,18 @@
       "description": "How many asks of the image build seat this module runs at once on each node, as node=asks pairs separated by commas, such as shanks=3,ace=2 (novox/hq ADR 0525 §5); a node set to 0 pulls nothing, a node not named runs one at a time. The control-node and the laptop build nothing.",
       "pattern": "|[a-z0-9_-]+=[0-9]+(,[a-z0-9_-]+=[0-9]+)*",
       "default": "shanks=3,ace=2,g14=0,novox=0"
+    },
+    "build-hours": {
+      "type": "string",
+      "description": "When each node may take this module's build asks, as node=HH:MM-HH:MM pairs in the node's local time, separated by commas, such as g14=18:00-06:00 (an end before its start crosses midnight). Outside its window a node takes no new step and finishes the ones it runs; a node not named, or an empty value, builds at any hour. The operator, 2026-10-26: g14 builds only outside office hours.",
+      "pattern": "|[a-z0-9_-]+=([01][0-9]|2[0-3]):[0-5][0-9]-([01][0-9]|2[0-3]):[0-5][0-9](,[a-z0-9_-]+=([01][0-9]|2[0-3]):[0-5][0-9]-([01][0-9]|2[0-3]):[0-5][0-9])*",
+      "default": ""
+    },
+    "cores-per-step": {
+      "type": "number",
+      "description": "How many processors one image step of this module needs (buildah, whose RUN lines are mostly fetches). The capacity above is an upper bound: on each node the module runs at most floor(the cores of its build slice's CPU quota / this) steps at once, the quota read live from its cgroup (issue 1806), so a lowered build CPU share never starves its steps. Above 0.",
+      "minimum": 0.1,
+      "default": 2
     }
   },
   "tools": [
@@ -78,7 +90,7 @@
       "path": "${dir:state}/settings.json",
       "mode": "0600",
       "owner": "mesh-build-image",
-      "takes-config": ["capacity"],
+      "takes-config": ["capacity", "cores-per-step", "build-hours"],
       "merge": "json",
       "template": "files/settings.json"
     },

modules/mesh-build-node/cmd/mesh-build-node/asks.go

@@ -48,9 +48,17 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
 	// The capacity's own change wakes the puller (issue 1887): the runtime's watch of the config value as mesh-config
 	// resolved it; the settings file is read only when that watch cannot start. A test's Capacity is its own.
 	var watch func(string, func(stdio.ProvisionChange) error) error
+	// And the CPU bounds it (issue 1806's follow-up): the configured capacity is an upper bound, the node's build slice
+	// gives floor(its quota's cores / the module's cores-per-step) at once, read live; a test judges by its own Capacity.
+	// And the node's build hours (the operator, 2026-10-26: g14 builds only from 18:00 to 06:00): outside them it takes
+	// nothing new.
+	var cores func() float64
+	var hours func() (*buildstep.BuildWindow, string)
 	if capacity == nil {
+		hours = buildstep.NodeBuildHours(m.Settings, m.Node, m.Say)
 		capacity = buildstep.NodeCapacity(m.Settings, buildstep.DefaultCapacities, m.Node, m.Say)
 		watch = buildstep.WatchConfigServed
+		cores = buildstep.NodeCoresPerStep(m.Settings, buildstep.DefaultCoresPerStep[delivery.AskNode], m.Say)
 	}
 	ask := m.askSteps(steps)
 	var load func(string) ([]byte, error)
@@ -58,7 +66,7 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
 		load = func(key string) ([]byte, error) { return m.ReadPauses.Get(key) }
 	}
 	return &buildstep.Puller{Source: source, Language: delivery.AskNode, Node: m.Node, Put: m.Steps, PausePut: m.Pauses, Load: load,
-		Capacity: capacity, WatchConfig: watch, Logf: m.Say,
+		Capacity: capacity, WatchConfig: watch, CoresPerStep: cores, BuildHours: hours, Logf: m.Say,
 		Run: func(ctx context.Context, a delivery.StepAsk) (any, error) {
 			if err := m.Prepare(ctx); err != nil {
 				return nil, err

modules/mesh-build-node/cmd/mesh-build-node/asks_test.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"os"
 	"strings"
 	"testing"
@@ -83,12 +84,28 @@ func TestManifestTakesTheBuildCapacity(t *testing.T) {
 	raw, _ := os.ReadFile(moduleDir + "/module.json")
 	var doc struct {
 		Config map[string]struct {
-			Default string `json:"default"`
+			Default json.RawMessage `json:"default"`
 		} `json:"config"`
 	}
 	_ = json.Unmarshal(raw, &doc)
-	if doc.Config[buildstep.CapacitySetting].Default != buildstep.DefaultCapacities {
+	// Issue 1806's follow-up: the cores a step needs is a setting of its own, in the settings file, with the SDK's default.
-		t.Errorf("the capacity's default = %q", doc.Config[buildstep.CapacitySetting].Default)
+	if cores := string(doc.Config[buildstep.CoresPerStepSetting].Default); cores != fmt.Sprint(buildstep.DefaultCoresPerStep[delivery.AskNode]) {
+		t.Errorf("the cores-per-step default = %s, want %g", cores, buildstep.DefaultCoresPerStep[delivery.AskNode])
+	}
+	if got := buildstep.NodeCoresPerStep(moduleDir+"/files/settings.json", 0, nil)(); got != buildstep.DefaultCoresPerStep[delivery.AskNode] {
+		t.Errorf("the settings template holds cores-per-step %g", got)
+	}
+	// And the build hours (the operator, 2026-10-26): a setting of their own, empty by default (any hour), in the template.
+	if hours := string(doc.Config[buildstep.BuildHoursSetting].Default); hours != `""` {
+		t.Errorf("the build-hours default = %s, want empty", hours)
+	}
+	if w, fault := buildstep.NodeBuildHours(moduleDir+"/files/settings.json", "g14", t.Errorf)(); w != nil || fault != "" {
+		t.Errorf("the settings template holds build hours %v (%s)", w, fault)
+	}
+	var capacity string
+	_ = json.Unmarshal(doc.Config[buildstep.CapacitySetting].Default, &capacity)
+	if capacity != buildstep.DefaultCapacities {
+		t.Errorf("the capacity's default = %q", capacity)
 	}
 	if resource(t, m, "settings")["path"] != "${dir:state}/settings.json" {
 		t.Error("no settings file")

modules/mesh-build-node/cmd/mesh-build-node/check.go

@@ -20,7 +20,6 @@ import (
 	"strings"
 	"time"
 
-	"git.novox.be/novox/mesh-sdk/go/buildstep"
 	"git.novox.be/novox/mesh-sdk/go/forgekey"
 )
 
@@ -55,15 +54,14 @@ type TestResult struct {
 	// the catalogue's TypeScript against the bounds is a later release's (R4f), not this one's gate.
 	OverBound bool      `json:"over_bound"`
 	Failed    []Failure `json:"failed,omitempty"`
-	// By is the build module and the SDK it was built with (buildstep.By): the checker names it when a failure hides
-	// its cause.
-	By string `json:"by,omitempty"`
 }
 
-// Failure is the SDK's failure contract (buildstep.Failure, issue 1901): a failing test of the test script, read from
+// Failure is a check or script that failed; Output is the first lines it wrote.
-// node's TAP reporter, or a type-check or build that failed, each with its cause (never empty, never a passing line) and
+type Failure struct {
-// its own output up to 4096 bytes, cause first.
+	Package string `json:"package"`
-type Failure = buildstep.Failure
+	Test    string `json:"test,omitempty"`
+	Output  string `json:"output,omitempty"`
+}
 
 func (m *Module) testTool() StepTool {
 	return StepTool{
@@ -106,7 +104,7 @@ func (m *Module) test(ctx context.Context, args map[string]any) (any, error) {
 	if err != nil {
 		return nil, err
 	}
-	res := &TestResult{Workspace: workspace, Module: module, Level: level, By: buildstep.By("mesh-build-node")}
+	res := &TestResult{Workspace: workspace, Module: module, Level: level}
 	script := "test"
 	if level == "integration" {
 		script = "test:integration"
@@ -130,12 +128,12 @@ func (m *Module) test(ctx context.Context, args map[string]any) (any, error) {
 	var check, run time.Duration
 	var failed []Failure
 	// a command that could not start is not a verdict: the step fails. One that ran and said no is.
-	ran := func(name string, r forgekey.Ran, report string) error {
+	ran := func(name string, r forgekey.Ran) error {
 		if r.Err != "" {
 			return fmt.Errorf("%s could not be run: status %d %s: %s", name, r.Status, r.Err, firstLine(r.Stderr))
 		}
 		if r.Status != 0 {
-			failed = append(failed, testFailures(where, name, dir, r, report)...)
+			failed = append(failed, Failure{Package: where, Test: name, Output: lines(r.Stdout + "\n" + r.Stderr)})
 		}
 		return nil
 	}
@@ -150,23 +148,17 @@ func (m *Module) test(ctx context.Context, args map[string]any) (any, error) {
 		start := m.now()
 		r := m.runIn(ctx, root, false, dir, nil, "node", line...)
 		check = m.now().Sub(start)
-		if err := ran(name, r, ""); err != nil {
+		if err := ran(name, r); err != nil {
 			return nil, err
 		}
 		res.Ran = append(res.Ran, name)
 	}
 	if hasScript && len(failed) == 0 {
 		start := m.now()
-		// node --test writes its TAP report to a file of the workspace (issue 1901), whatever the script prints itself
+		env := []string{"PATH=" + binDir(root) + ":" + pathOrDefault(), "npm_config_cache=" + filepath.Join(m.Toolchain.Paths.Cache, "npm")}
-		report := filepath.Join(root, ".mesh-node-test-"+level+".tap")
-		_ = os.Remove(report)
-		env := []string{"PATH=" + binDir(root) + ":" + pathOrDefault(), "npm_config_cache=" + filepath.Join(m.Toolchain.Paths.Cache, "npm"),
-			"NODE_OPTIONS=" + buildstep.NodeTestOptions(report)}
 		r := m.runIn(ctx, root, false, dir, env, "npm", scriptArgs(script)...)
 		run = m.now().Sub(start)
-		tap, _ := os.ReadFile(report)
+		if err := ran(script, r); err != nil {
-		_ = os.Remove(report)
-		if err := ran(script, r, string(tap)); err != nil {
 			return nil, err
 		}
 		res.Ran = append(res.Ran, script)
@@ -174,7 +166,7 @@ func (m *Module) test(ctx context.Context, args map[string]any) (any, error) {
 	res.Failed = failed
 	var why []string
 	for _, f := range failed {
-		why = append(why, failureWhy(f))
+		why = append(why, fmt.Sprintf("%s failed in %s: %s", f.Test, f.Package, firstLine(f.Output)))
 	}
 	if level == "unit" {
 		res.Elapsed, res.Bound = (check + run).Seconds(), UnitBound.Seconds()
@@ -196,23 +188,18 @@ func (m *Module) test(ctx context.Context, args map[string]any) (any, error) {
 	return res, nil
 }
 
-// testFailures is the module's parse path of a command that failed (the conformance kit runs it, issue 1901): the test
+// lines is the first lines of a command's output.
-// script's failing tests from node's TAP report, or, for the type-check or the build, or a script whose report names no
+func lines(out string) string {
-// failing test, the command's own output with the line that names its error as the cause.
+	var keep []string
-func testFailures(where, name, dir string, r forgekey.Ran, report string) []Failure {
+	for _, l := range strings.Split(out, "\n") {
-	if name == "test" || name == "test:integration" {
+		if l = strings.TrimSpace(l); l != "" {
-		return buildstep.ReadTAP(where, name, dir, report, r.Stdout+"\n"+r.Stderr)
+			keep = append(keep, l)
+			if len(keep) == 15 {
+				break
+			}
+		}
 	}
-	return []Failure{buildstep.ConsoleFailure(where, name, r.Stdout+"\n"+r.Stderr)}
+	return strings.Join(keep, "\n")
-}
-
-// failureWhy is the words of one failure: the test or check that failed, where, and its cause.
-func failureWhy(f Failure) string {
-	file := ""
-	if f.File != "" {
-		file = " (" + f.File + ")"
-	}
-	return fmt.Sprintf("%s failed in %s%s: %s", f.Test, f.Package, file, firstLine(f.Cause))
 }
 
 func firstLine(s string) string {

modules/mesh-build-node/cmd/mesh-build-node/check_test.go

@@ -9,7 +9,6 @@ import (
 	"testing"
 	"time"
 
-	"git.novox.be/novox/mesh-sdk/go/buildstep"
 	"git.novox.be/novox/mesh-sdk/go/forgekey"
 )
 
@@ -199,8 +198,4 @@ func TestTheTestScriptFindsTscAndEsbuildOnItsPath(t *testing.T) {
 	if npm.name != "npm" || !strings.HasPrefix(path, bin+":") {
 		t.Errorf("npm ran with PATH %q, want %s first", path, bin)
 	}
-	// 1901/AC7: the test script runs under node's TAP reporter, written to a file of the workspace the step reads
-	if !slices.Contains(npm.env, "NODE_OPTIONS="+buildstep.NodeTestOptions(filepath.Join(work, "w1", ".mesh-node-test-unit.tap"))) {
-		t.Errorf("npm ran with %v, want NODE_OPTIONS naming the TAP reporter and its file", npm.env)
-	}
 }

modules/mesh-build-node/cmd/mesh-build-node/cpu.go

@@ -15,6 +15,8 @@ import (
 func (m *Module) cpuLimits() buildcpu.Limits {
 	slots := 1
 	switch {
+	case m.Held != nil:
+		slots = m.Held.CapacityNow() // the capacity the puller judges by, bounded by the node's build slice
 	case m.Capacity != nil:
 		slots = m.Capacity()
 	case m.Settings != "":
@@ -32,5 +34,9 @@ func (m *Module) threadEnv() []string {
 // cpuStatus is what the status tool says of it: the limits a step is given, and what the kernel holds this runtime
 // to (its unit and its slice), read from its cgroup rather than assumed.
 func (m *Module) cpuStatus() map[string]any {
-	return map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
+	out := map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
+	if m.Held != nil {
+		out["capacity"] = m.Held.CapacityDetail() // the capacity judged by and why (issue 1806's follow-up)
+	}
+	return out
 }

modules/mesh-build-node/cmd/mesh-build-node/fetch.go

@@ -51,11 +51,13 @@ type FetchResult struct {
 	// commit, the merge commit of the head onto it, the paths the merge changes and the tree of each module directory.
 	// A head that does not merge cleanly is an answer: Merge is empty, Conflicts names the files, and the workspace is
 	// left at the trunk commit with nothing installed.
-	Base      string                          `json:"base,omitempty"`
+	Base      string   `json:"base,omitempty"`
-	Merge     string                          `json:"merge,omitempty"`
+	Merge     string   `json:"merge,omitempty"`
-	Conflicts []string                        `json:"conflicts,omitempty"`
+	Conflicts []string `json:"conflicts,omitempty"`
-	Changed   []string                        `json:"changed,omitempty"`
+	Changed   []string `json:"changed,omitempty"`
-	Trees     map[string]buildstep.ModuleTree `json:"trees,omitempty"`
+	// Programs are the changed files that are compiled programs (issue 1577); a merge answers it, a pointer to an empty list when there are none, absent for a fetch that made no merge.
+	Programs *[]buildstep.Program            `json:"programs,omitempty"`
+	Trees    map[string]buildstep.ModuleTree `json:"trees,omitempty"`
 	// Group is the group's package the fetch packed and served to the TypeScript members (the call's `package`):
 	// "<name>@<version> <integrity>".
 	Group string `json:"group,omitempty"`

modules/mesh-build-node/cmd/mesh-build-node/kit_test.go

@@ -1,20 +0,0 @@
-package main
-
-import (
-	"testing"
-
-	"git.novox.be/novox/mesh-sdk/go/buildstep"
-	"git.novox.be/novox/mesh-sdk/go/buildstep/conformance"
-	"git.novox.be/novox/mesh-sdk/go/forgekey"
-)
-
-// 1901/AC7: the module's own parse path (testFailures, as the test step calls it on a command that failed) keeps the
-// failure contract on every captured node --test and tsc case of the SDK's conformance kit.
-func TestTheTestStepKeepsTheFailureContract(t *testing.T) {
-	conformance.Run(t, conformance.NodeTest, func(o conformance.Output) []buildstep.Failure {
-		return testFailures(".", "test", o.Dir, forgekey.Ran{Status: 1, Stdout: o.Stdout, Stderr: o.Stderr}, o.Report)
-	})
-	conformance.Run(t, conformance.TypeCheck, func(o conformance.Output) []buildstep.Failure {
-		return testFailures(".", "type-check", o.Dir, forgekey.Ran{Status: 2, Stdout: o.Stdout, Stderr: o.Stderr}, "")
-	})
-}

modules/mesh-build-node/cmd/mesh-build-node/preview.go

@@ -27,6 +27,9 @@ func (m *Module) merge(ctx context.Context, run forgekey.Runner, res *FetchResul
 	}
 	res.Base = mr.Base
 	res.Conflicts, res.Merge, res.Changed = mr.Conflicts, mr.Merge, mr.Changed
+	if mr.Merge != "" {
+		res.Programs = &mr.Programs
+	}
 	if res.Merge == "" {
 		return nil
 	}

modules/mesh-build-node/files/settings.json

@@ -1,3 +1,5 @@
 {
-  "capacity": "shanks=3,ace=2,g14=0,novox=0"
+  "capacity": "shanks=3,ace=2,g14=0,novox=0",
+  "cores-per-step": 2,
+  "build-hours": ""
 }

modules/mesh-build-node/go.mod

@@ -3,7 +3,7 @@ module meshbuildnode
 go 1.26.0
 
 require (
-	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026191742-47a66e3c0dc8
+	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536
 	github.com/distribution/distribution/v3 v3.1.2
 	github.com/nats-io/nats.go v1.54.0
 )

modules/mesh-build-node/go.sum

@@ -1,5 +1,5 @@
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026191742-47a66e3c0dc8 h1:6OaUWIjcpXOtnu70zeqH0VEaF4oGykrxGpFkaFOzCmY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536 h1:+SoDdDXF7Tgj38WP4kRpUSps6DJVl6P+w5u/KfdtwnQ=
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026191742-47a66e3c0dc8/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026202658-805b4d9a3536/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
 github.com/alicebob/miniredis/v2 v2.35.0 h1:QwLphYqCEAo1eu1TqPRN2jgVMPBweeQcR21jeqDCONI=
 github.com/alicebob/miniredis/v2 v2.35.0/go.mod h1:TcL7YfarKPGDAthEtl5NBeHZfeUQj6OXMm/+iu5cLMM=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op h1:Z/MZK75wC/NSrkgqeNIa7jexam9uWzhLmFTSCPI/kn0=

modules/mesh-build-node/module.json

@@ -25,6 +25,18 @@
       "description": "How many asks of the Node build seat this module runs at once on each node, as node=asks pairs separated by commas, such as shanks=3,ace=2 (novox/hq ADR 0525 §5); a node set to 0 pulls nothing, a node not named runs one at a time. The control-node and the laptop build nothing.",
       "pattern": "|[a-z0-9_-]+=[0-9]+(,[a-z0-9_-]+=[0-9]+)*",
       "default": "shanks=3,ace=2,g14=0,novox=0"
+    },
+    "build-hours": {
+      "type": "string",
+      "description": "When each node may take this module's build asks, as node=HH:MM-HH:MM pairs in the node's local time, separated by commas, such as g14=18:00-06:00 (an end before its start crosses midnight). Outside its window a node takes no new step and finishes the ones it runs; a node not named, or an empty value, builds at any hour. The operator, 2026-10-26: g14 builds only outside office hours.",
+      "pattern": "|[a-z0-9_-]+=([01][0-9]|2[0-3]):[0-5][0-9]-([01][0-9]|2[0-3]):[0-5][0-9](,[a-z0-9_-]+=([01][0-9]|2[0-3]):[0-5][0-9]-([01][0-9]|2[0-3]):[0-5][0-9])*",
+      "default": ""
+    },
+    "cores-per-step": {
+      "type": "number",
+      "description": "How many processors one Node step of this module needs (tsc, esbuild and a test runner; a median step takes 15 s). The capacity above is an upper bound: on each node the module runs at most floor(the cores of its build slice's CPU quota / this) steps at once, the quota read live from its cgroup (issue 1806), so a lowered build CPU share never starves its steps. Above 0.",
+      "minimum": 0.1,
+      "default": 2
     }
   },
   "tools": [
@@ -100,7 +112,7 @@
       "path": "${dir:state}/settings.json",
       "mode": "0600",
       "owner": "mesh-build-node",
-      "takes-config": ["capacity"],
+      "takes-config": ["capacity", "cores-per-step", "build-hours"],
       "merge": "json",
       "template": "files/settings.json"
     },

modules/mesh-issues/cmd/mesh-issues/list_progress_test.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"reflect"
+	"strings"
 	"testing"
 	"time"
 )
@@ -26,6 +27,22 @@ func TestListSaysWhenEachIssueMovedAndKeepsTheLinkedOnes(t *testing.T) {
 	if _, err := h.Link(LinkAsk{Number: quiet, Kind: LinkDesign, Target: "03-DESIGN/01-to-be/47-delivery-from-commit-to-delivered.md"}); err != nil {
 		t.Fatal(err)
 	}
+	// Issue 1781: a milestone or a commit link places the issue and moves nothing, nor keeps its worker current.
+	if _, err := h.milestoneSet("lead@shanks", MilestoneSetAsk{Design: 47, ID: "R6", Outcome: "x"}); err != nil {
+		t.Fatal(err)
+	}
+	h.fixing(t, noted)
+	worked, _ := h.Get(noted)
+	clock = clock.Add(time.Hour)
+	for _, l := range []LinkAsk{{Number: noted, Kind: LinkMilestone, Target: "47/R6"},
+		{Number: noted, Kind: LinkCommit, Target: "mesh-catalog@" + strings.Repeat("a", 40)}} {
+		if _, err := h.link("seed@shanks", l); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if after, _ := h.Get(noted); !after.Worker.Active.Equal(worked.Worker.Active) {
+		t.Fatalf("a milestone link kept the worker current: %v, was %v", after.Worker.Active, worked.Worker.Active)
+	}
 	start := time.Date(2026, 10, 26, 12, 0, 0, 0, time.UTC)
 	for _, c := range []struct {
 		name   string
@@ -35,7 +52,7 @@ func TestListSaysWhenEachIssueMovedAndKeepsTheLinkedOnes(t *testing.T) {
 		refuse bool
 	}{
 		{"numbers say moved", ListAsk{Numbers: []uint64{quiet, noted, linked}}, []uint64{quiet, noted, linked},
-			[]time.Time{start.Add(2 * time.Hour), start.Add(time.Hour), start.Add(2 * time.Hour)}, false},
+			[]time.Time{start.Add(2 * time.Hour), start.Add(2 * time.Hour), start.Add(2 * time.Hour)}, false},
 		{"linked to a decision", ListAsk{Linked: "decision:0493"}, []uint64{linked}, nil, false},
 		{"linked to a design", ListAsk{Linked: " design:03-DESIGN/01-to-be/47-delivery-from-commit-to-delivered.md"}, []uint64{quiet}, nil, false},
 		{"linked and numbers together", ListAsk{Linked: "decision:0493", Numbers: []uint64{quiet, noted}}, nil, nil, false},

modules/mesh-issues/cmd/mesh-issues/tracker.go

@@ -675,7 +675,9 @@ func (t *Tracker) link(by string, a LinkAsk) (*Linked, error) {
 					return fmt.Errorf("issue %d already has the %s link to %s", is.Number, kind, target)
 				}
 				is.Links = append(is.Links[:i:i], is.Links[i+1:]...)
-				touch(is, by, at)
+				if !placesOnly(kind) {
+					touch(is, by, at)
+				}
 				return nil
 			}
 		}
@@ -692,7 +694,9 @@ func (t *Tracker) link(by string, a LinkAsk) (*Linked, error) {
 			return fmt.Errorf("issue %d has %d links, the most one issue keeps", is.Number, MostLinks)
 		}
 		is.Links = append(is.Links, Link{Kind: kind, Target: target, By: by, At: at})
-		touch(is, by, at)
+		if !placesOnly(kind) {
+			touch(is, by, at)
+		}
 		return nil
 	})
 	if err != nil {
@@ -768,7 +772,7 @@ type Row struct {
 }
 
 // lastMoved is when an issue last changed, as its own record says: the latest of its opening, its closing, its
-// notes, its links, its worker's start and last act, its import and what the delivery last said of each fix.
+// notes, its links but those that only place it, its worker's start and last act, its import and what the delivery last said of each fix.
 func lastMoved(is *Issue) time.Time {
 	at := is.Opened
 	later := func(t time.Time) {
@@ -783,7 +787,9 @@ func lastMoved(is *Issue) time.Time {
 		later(n.At)
 	}
 	for _, l := range is.Links {
-		later(l.At)
+		if !placesOnly(l.Kind) {
+			later(l.At)
+		}
 	}
 	if w := is.Worker; w != nil {
 		later(w.Since)
@@ -798,6 +804,10 @@ func lastMoved(is *Issue) time.Time {
 	return at
 }
 
+// placesOnly says a link of this kind only places the issue (its milestone) or names a commit that fixed it: no work
+// on it, so it neither moves the issue nor keeps its worker current (issue 1781: the seed linked 188 issues at once).
+func placesOnly(kind string) bool { return kind == LinkMilestone || kind == LinkCommit }
+
 // checkLinked is a list's linked filter, kind:target, said the one way a link of that kind is kept.
 func checkLinked(s string) (kind, target string, err error) {
 	k, t, ok := strings.Cut(strings.TrimSpace(s), ":")

modules/mesh-knowledge/cmd/mesh-knowledge/progress.go

@@ -168,6 +168,8 @@ func (k *KB) Progress(a ProgressAsk) (*Progress, error) {
 	if err != nil {
 		return nil, err
 	}
+	// A cut takes the warnings from the last: the calls that failed are said before the answers that did not parse.
+	callsFirst(p.Warnings)
 	fitProgress(p, boundOf(a.Bound))
 	return p, nil
 }
@@ -835,8 +837,21 @@ func movedSay(t *time.Time) string {
 	return " · moved " + when(t)
 }
 
+// callsFirst puts the warnings of calls that failed before those of answers that did not parse, in place.
+func callsFirst(w []string) {
+	sort.SliceStable(w, func(i, j int) bool {
+		return !strings.Contains(w[i], " answered something else") && strings.Contains(w[j], " answered something else")
+	})
+}
+
 // fitProgress keeps an answer within its bound: the items go first, then the tree's last lines, saying what was cut.
+// A minimal answer never carries the items: its tree says the same, one line per milestone, so leaving them out is how
+// the minimal form is made (the items of design 47 alone passed 8192 bytes) and no cut. A detailed answer's items, and
+// everything else that goes, are said in cut.
 func fitProgress(p *Progress, bound int) {
+	if p.Detail == DetailMinimal && p.Tree != "" {
+		p.Items = nil
+	}
 	if size(p) <= bound {
 		return
 	}

modules/mesh-knowledge/cmd/mesh-knowledge/progress_test.go

@@ -306,12 +306,23 @@ func TestProgressOfADesignMinimalAndDetailed(t *testing.T) {
 	if len(raw) > DefaultBound || p.Detail != DetailMinimal || !strings.Contains(p.Source, "the issue tracker's milestone records of design 47") {
 		t.Fatalf("%d bytes, %s, %s", len(raw), p.Detail, p.Source)
 	}
+	if p.Cut != "" || len(p.Items) != 0 {
+		t.Errorf("a minimal answer leaves the items to its tree and is not a cut: cut %q, %d items", p.Cut, len(p.Items))
+	}
+	warns := []string{"mesh-delivery.show a answered something else: x", "issue-tracker.get 1: refused", "the tracker did not name 2", "issue-tracker.get 3 answered something else: y"}
+	callsFirst(warns)
+	if strings.Join(warns, "|") != "issue-tracker.get 1: refused|the tracker did not name 2|mesh-delivery.show a answered something else: x|issue-tracker.get 3 answered something else: y" {
+		t.Errorf("call failures do not come first: %q", warns)
+	}
 	if seats.asked["seat:issue-tracker.list"] != 1 || seats.asked["seat:mesh-delivery.deliveries"] != 0 || seats.asked["seat:issue-tracker.get"] != 0 {
 		t.Fatalf("minimal asked %v", seats.asked)
 	}
 	if w := strings.Join(p.Warnings, "\n"); !strings.Contains(w, "the tracker neither answered nor named missing") || !strings.Contains(w, "973, 525") {
 		t.Errorf("a row the tracker did not answer is not said: %v", p.Warnings)
 	}
+	if big, _ := k.Progress(ProgressAsk{Of: "design 47", Bound: 8192}); big.Cut != "" || big.Tree != p.Tree {
+		t.Errorf("a minimal answer at bound 8192 is cut: %q", big.Cut)
+	}
 	lines := strings.Split(p.Tree, "\n")
 	if !strings.HasPrefix(lines[0], "✗ design 47 · Delivery: from a commit to delivered — ") {
 		t.Fatalf("first line %q", lines[0])