[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/40a3b2fc35c043778de2f3996395d4... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/52fd12098adf400ca3ca06dc4de4be52 : SUCCESS in 4m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7620a5ee4f3c4bf4b62ca151a45fc4c4 : SUCCESS in 6m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/06c7680a550f4057ab2a7a59ba072f8a : SUCCESS in 5m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/14c8835a327e48189780b29d1d34410e : FAILURE in 5m 33s