Scratch build from the current dist-git failed: https://koji.fedoraproject.org/koji/taskinfo?taskID=61595687
This bug appears to have been reported against 'rawhide' during the Fedora 34 development cycle. Changing version to 34.
This issue depends on bug #1926779 in kyua, because unit test running is crashing just on every run of a test. It seems kyua is severely broken at this time. I tried the same code on f33, it passes all tests itself. Strange is, kyua's itself tests were disabled for some reason, so this issue were not discovered earlier on that package itself. I can disable unit tests, but would like to get fixed kyua instead.
It seems kyua problem was fixed by change somewhere in compiler or used libraries. New build seems fine. Anyway, I disabled unittests on Rawhide and f34 in order to rebuild security update. Once kyua is again working fine, it would be reenabled.