[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/2e8a461160ef4d4d84da3b03c1fe48... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9515d3bcab6940f698840ebbf52d7782 : SUCCESS in 4m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/732eb592697143d6855a31e28663dbab : SUCCESS in 5m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8ba9a2cdf3e24cd78cf3135580494c61 : SUCCESS in 5m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7b0e1171def040cca5188d31e35edb63 : FAILURE in 3m 40s