Add -s -noreset to xvfb-run calls
Xvfb will close when the last client exists, which may be the cause of sporadic test failures. Add -s -noreset to the command line to prevent this from happening.
I believe this may be the cause for this failure https://source.puri.sm/benzea/libhandy/-/jobs/7991
Hard to test properly.
Edited by Benjamin Berg