[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/4d61cc2db8b3491fb495004e8e745a... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/32b83ac8d2ef418eb8bd6ab153629fa6 : SUCCESS in 3m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8066e7beee024f86a0f56b8832d9a33a : SUCCESS in 5m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/788709bbd99646bd9ea755c6847cf678 : SUCCESS in 5m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3f13c762cf0d4d7b9645aaf4640016c8 : FAILURE in 4m 47s