[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/bae12c44ff134ece907f94634ab62b... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ce3d693cc8c745ecabcbd07dc5e601d5 : SUCCESS in 4m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d10a9fb0d2b349ddb06375cb2f83a557 : SUCCESS in 6m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a59e3fa2aef94c14aa7f5dc62a3144d4 : SUCCESS in 5m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/08c8db0720d042fca4428106dde827a7 : FAILURE in 5m 14s