Say a failed test's whole output on the Go and Node build modules' own log streams, kept 14 days and 2 GiB, and read it with build_go_log and build_node_log, so a cut verdict's cause is read, not guessed

modules/mesh-build-go/module.json

@@ -51,6 +51,7 @@
     "build_go_release",
     "build_go_step",
     "build_go_steps",
+    "build_go_log",
     "build_go_step_end",
     "build_go_toolchains",
     "build_go_status",
@@ -60,6 +61,12 @@
     {
       "name": "toolchains-go",
       "events": ["toolchain.**"]
+    },
+    {
+      "name": "go-build-logs",
+      "events": ["log.**"],
+      "max-age-days": 14,
+      "max-mib": 2048
     }
   ],
   "requires": [