[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/9527a6af22b54daf86820b58b0ac7f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a223cfb974b14dce942f39eb4187592f : SUCCESS in 6m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1af53409d9a04b5692515f1842384b34 : SUCCESS in 5m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d586518f84584839b61fd3c2dee08b84 : SUCCESS in 4m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/615a665d11b941d09c147639a98f4f54 : FAILURE in 4m 38s