A try of mesh-controller's status read 'cmd/mesh-controller: PASS': the build module sent a package failure whose output began with go test's PASS. The checker now drops go test's summary lines, takes the first panic, fatal error or signal line as the cause when the build module told none apart (read before the words are cut), says the tests passed and the program failed after them when nothing else is left, and cuts a cause to 1 KB so the words keep their bound (1901/AC5).