[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/427a326a744c4141863670524cc7bf... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5486d1b688ae4f62b5b39434f4f0d016 : SUCCESS in 4m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e881e29789cd4b04822845d65f27a98d : SUCCESS in 5m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d980dfa2b7504effb7ac4db18e75be5e : SUCCESS in 5m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c488775ad3ab4c90ace16a95bd40e1c9 : FAILURE in 6m 08s