[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/e4eda28edca24f07bbd0d00bd07273... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/39387f621aeb4592854de0da3c101357 : SUCCESS in 5m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d7bf5d95e9134bd48ed2f8a4c89f5316 : SUCCESS in 5m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4ec7b7ba7ef14083ac2cb9207f7057d1 : SUCCESS in 4m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c7dd37ecb65149afa79c52e12225bd4d : FAILURE in 4m 53s