[Openstack-stable-maint] Stable check of openstack/ceilometer for ref refs/heads/stable/xena failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/c85e5e9c0cd3455ab1da92371145f9... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f22a0366b2574fca8d1be9d32d67b714 : SUCCESS in 8m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fa465d04e93f4da2a96b9d10c69d3522 : TIMED_OUT in 41m 25s - openstack-tox-py38 https://zuul.opendev.org/t/openstack/build/0d6c7fc154df429d8c086bff4834cf01 : SUCCESS in 6m 39s