[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/1d86f4ba739c4b07ade1681a022871... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d103b7017866421eb286e51320b95595 : SUCCESS in 3m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/af0e5ff5c6d64c81b1c5dbc733f1add8 : SUCCESS in 4m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/50af0c7c7af84f56a323216bc7e7090a : SUCCESS in 5m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e8fe69c68c3741a6a13f46743621139d : FAILURE in 3m 45s