The builder kvm-rpm-centos73-ppc64 builder is effectively disabled from running any tests on 10.5, because it aborts very early:
This was first observed in the bb-10.5-19708 branch:
The previous 10.5 build on that platform completed fine:
Ever since the problematic push to 10.5, the platform has been broken:
The culprit seems to be
MDEV-20477 Merge binlog extended metadata support from the upstream.