[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/1b49afbec2934208a455432a81e64f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6e31318a3b234736bded1b71cc59d186 : SUCCESS in 4m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/58fd196c83234426ba48a912d4613700 : SUCCESS in 4m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bb719fece3b64cca9b1a57cd7363a479 : SUCCESS in 5m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/92c90e1d773847d182adcd58039566e9 : FAILURE in 3m 50s