On Fri, Feb 15, 2019 at 04:13:15PM -0500, Randall S. Becker wrote: > Sadly, the fix does not change the results. In fact, it > makes the hang far more likely. Subtest 6,7,8 fails here, > at close() Correct, I did not expect it to help, it was for the other issue. As for the hang issue, from your another message it seems to me that perl waiting correctly, there are really child process which do not exit. What you could try is https://public-inbox.org/git/20181124093719.10705-1-max@xxxxxxxxxx/ (I'm not sure it would not conflict by now), this would remove dependency between tests. If it helps it would be very valuable information.