ZoL Buildbot Fedora builder: command timed out: 4200 seconds without output running

[ryao]

The Fedora builder is failing with the following error:

command timed out: 4200 seconds without output running ['runurl', 'https://raw.githubusercontent.com/openzfs/zfs-buildbot/master/scripts/bb-test-zfstests.sh'], attempting to kill

This occurs during the ZTS right after this line is printed:

20:56:32.37 SUCCESS: modprobe -r scsi_debug

It occurs after a successful auto_online_002_pos test.

Here are some examples:

http://build.zfsonlinux.org/builders/Fedora%2035%20x86_64%20%28TEST%29/builds/4820
http://build.zfsonlinux.org/builders/Fedora%2035%20x86_64%20%28TEST%29/builds/4822

I do not understand the buildbot infrastructure enough to debug further.

[ryao]

It appears that the issue does not always occur at the same point in the ZTS:

http://build.zfsonlinux.org/builders/Fedora%2035%20x86_64%20%28TEST%29/builds/4808

[stale]

This issue has been automatically marked as "stale" because it has not had any activity for a while. It will be closed in 90 days if no further activity occurs. Thank you for your contributions.