[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/d35c27a8674b4e388d6ae23aa37b8f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0a9bb65f209c400098add81b59f13816 : SUCCESS in 5m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ef2d7319e1c8469b914554eb18c2ca9e : SUCCESS in 6m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cf83afaa8f1e41a9a365417a709f5381 : SUCCESS in 5m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/add29d401fff44c5a8c1f17deaf893c9 : FAILURE in 4m 57s