[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/2a203ae2fa174a26ba85a9b87eda66... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/79a2df85d0a643dfa82444d6b8d67afb : SUCCESS in 3m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/66fec18676d64634b2df5ac59bfc4669 : SUCCESS in 4m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fd1332639d2446d99c851b1d8d0f392f : SUCCESS in 4m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/92461d7692254839b671aed2ce467745 : FAILURE in 4m 22s