Check for successful exit too
Check for successful exit too

Once in a blue moon, the race condition won't cause a throw and the
program will succeed. Watch for that case too, so the test fails
only when we get SEGV and ilk.

bitrauser/roast,bitrauser/roast,dogbert17/roast,zostay/roast,zostay/roast,dogbert17/roast,perl6/roast,zostay/roast