Development record

TestStopLeavesNothingListening is flaky on Linux and twice dropped a merge-queue entry (the run that landed #935). The dashboard's Linux readProcess reads /proc/<pid>/stat and /proc/<pid>/exe and treats only ENOENT, a zombie or a dead state as a gone process. A read that races the server's exit fails with ESRCH ("no such process") while the /proc entry still exists, so sameProcess returns that error and Stop fails, where it should have seen the process gone.