[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/9e994f629eff43a793e5815d15d815... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2f8b60a2f86e459e821c514016b9d924 : SUCCESS in 4m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ea807da90fba46a9bb483ae0c8efa07a : SUCCESS in 6m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/337eee362e904e11b22ca8a10c26ddd9 : SUCCESS in 5m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3637413c0e1f46f4b613e3667f39ae24 : FAILURE in 4m 24s