[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/1413e0ac7ffa493e94841426cb6afc... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/abac4968c1c0490abbeac9ded600df98 : SUCCESS in 4m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b73d7d99f43f41e6aacc69d21d1cbd4a : SUCCESS in 5m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/15b968fa8317458bbc496c5eae297d64 : SUCCESS in 4m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3a4ef20f4c924e499a249d4c4eaa96b4 : FAILURE in 4m 16s