[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/bc954c1cbb4f433a9e392604b0a885... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/995b7ad3b772451294f617fc090dbfe3 : SUCCESS in 4m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/17104d088ced4420890754bf22af4b83 : SUCCESS in 6m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c93048ecb5544afa941587cc449f994c : SUCCESS in 5m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0eaa7bf025884444aae82f66fab63893 : FAILURE in 3m 52s