[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/4caac00716264f55a9f5e428a2c1c6... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/62661089adb74563adb7d0c9ea004e72 : SUCCESS in 5m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/36e07f7d95c34ee099d0a57ed7b6ff3a : SUCCESS in 4m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/476e63f88b8a4aa1aaeff7ec72f3f956 : SUCCESS in 6m 23s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/47d558ac36204ba98c8e1f23069e36eb : FAILURE in 5m 04s