[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/3ee46fb87d1f4775b773ff29bf68f3... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/291115cddea34d01901f20824abbcc13 : SUCCESS in 4m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/16cf5f19fd724187b9256e7bd8ab82ea : SUCCESS in 6m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/21041e095d0f451fb593f6d7659df660 : SUCCESS in 5m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a7a5a22431f8409f9d8d9a9d27d83925 : FAILURE in 4m 36s