runtime:cpu4: TestTracebackSystem/panic failures

[gopherbot]

#!watchflakes
default <- pkg == "runtime:cpu4" && test == "TestTracebackSystem/panic"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestTracebackSystem/panic
    traceback_system_test.go:181: stderr:
        
        stdout: 
    traceback_system_test.go:186: child process did not produce a crash report
--- FAIL: TestTracebackSystem/panic (0.00s)

— watchflakes