[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/a10c3fcf6eae47af9dfe859a6d08fa... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/adb5d726a26c4171923a9cf98068cb4f : SUCCESS in 3m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9f3506b1d9ba4fe4a266ea249d774866 : SUCCESS in 5m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/915451f2e45f44df97473f046d9be2dd : SUCCESS in 4m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/76cb88b2ab8d4431b234e53a8fef172c : FAILURE in 4m 26s