[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/304acee3fdce4954a929180d4c9330... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3f4ad76a1fce496cab71a02bd5c82d44 : SUCCESS in 4m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/01b3f3a34f22457dae3d1199bc69bc9d : SUCCESS in 8m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a9cf82457bba4cce96a257f89eca503c : SUCCESS in 5m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/62bca6f45e45425ba2053693056bdfcf : FAILURE in 6m 10s