[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/27576df8737040bca71b5174e07a73... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4d5eb7adb8e644ffa3143654eb19e499 : SUCCESS in 20m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9985f1e993544cc9b812a4ec6f5e627a : SUCCESS in 4m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d872dbedde9748f3bbb85d4882733748 : SUCCESS in 5m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/389c8e44a317443f88f2af5106206af2 : FAILURE in 6m 22s