The controller raises what the watchman says stopped moving, and takes a machine's silence from its presence (issue 1156)

cmd/mesh-controller/apply_failing.go

@@ -33,7 +33,7 @@ const packageManagerKey = "the package manager ("
 func watchApplyFailing(f *signalFacts) []conditions.Observation {
 	heard := map[string]bool{}
 	for _, m := range f.machines {
-		if !m.asleep() && !m.lastHeard.IsZero() && f.now.Sub(m.lastHeard) <= heartbeatBound(m.every) {
+		if !m.asleep() && !m.lastHeard.IsZero() && !m.silent(f.now) {
 			heard[m.name] = true
 		}
 	}