[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/bb89dfeefcad4770a572b1eb699db3... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/858cf7731a40499bb1d61eb5deba674e : SUCCESS in 5m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b5c05864256f41a69981b8e7d954c785 : SUCCESS in 4m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7a769885e9074508a56852ee9495f9f6 : SUCCESS in 5m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d8c308bddcb94bcf8fe31bf9bebec656 : FAILURE in 4m 19s