[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/122f56219b244a0cbaafa9f26726bc... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/31455eb5cebb4f35864d2ffe14c0f9e0 : SUCCESS in 4m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9ed66ecb234a4f9e9e18c27431e5c7ff : SUCCESS in 6m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/61c2a02490e041be9767eb8946e30b93 : SUCCESS in 5m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/08f2aca4f0b249cfa4f877a5a95ff409 : FAILURE in 5m 23s