[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/85eccf47bf614709925c9d115472f0... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ff6f5a588c90499a897887285e452937 : SUCCESS in 5m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a7561154b2594f25a4dcf8111af67157 : SUCCESS in 5m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/666d2c7aedaa43eba0368175b2efbb18 : SUCCESS in 6m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/aa3500b68e3f40ff9a1ca6812703989b : FAILURE in 4m 38s