[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/c58a8a7f078b40a3990d120f6f6005... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/65831986e72341a3823f9d07c9e355a6 : SUCCESS in 4m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c874cb1b7dd046a8bdedc71a87f3bfc7 : SUCCESS in 4m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/db88ab4947764dd9a1cbf38480932e72 : SUCCESS in 4m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5b70d00336f647408d89f0056e9324b2 : FAILURE in 4m 24s