[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/40494841538847f59948b2cd1eb403... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b1389673cbea4dc88c6b52e575c3dbf5 : SUCCESS in 4m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/675caff201eb4b72952ea1d8f87b5a43 : SUCCESS in 6m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/dc2f9fa2bbb84c358ec542646bce5880 : SUCCESS in 7m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5f28a192973a4faea569abadc9e11884 : FAILURE in 4m 46s