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

Build failed. https://zuul.opendev.org/t/openstack/buildset/c8eb0176a4864d70a2ff39e5d280f8... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0facb91704d54f688d5a4398a4d17fd9 : TIMED_OUT in 31m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/754ce394be2843358f396fa28a6b88ba : SUCCESS in 2m 44s - openstack-tox-py38 https://zuul.opendev.org/t/openstack/build/64ce9086424d49caa58f6ba7ab40a5b4 : TIMED_OUT in 40m 39s