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

Build failed. https://zuul.opendev.org/t/openstack/buildset/691f9d1057ee4a67bd3b2b3ead91e7... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/42558eed8831482abc59b13460814ea7 : SUCCESS in 5m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3ce7a4d01cd5463ba1a14a776240ef10 : SUCCESS in 5m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8b872653895644a985834f97909bb453 : SUCCESS in 6m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b586c2d4629e4c06a04f061882efa3ce : FAILURE in 5m 53s