[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/fb8610f267754ec69deeb86554651c... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/50a6a497a3fb45a6891c66ea5832c79e : SUCCESS in 4m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/81f26c3d58ef4062a5d2521768aa9dd3 : SUCCESS in 4m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3847a8393a564817a975b77b8d755868 : SUCCESS in 4m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d10887ad6b294cd9b22ff44b080347e0 : FAILURE in 5m 12s