[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/a6f69cd2d64d45efbf25d1b81c66a3... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/20c06f271e1c4d0bb3a942c14d5f3e5d : SUCCESS in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e7841e4d872b400fb97e0b1234878a42 : SUCCESS in 6m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/41abd58adf704d0aaabb9cd6a0948854 : SUCCESS in 4m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/68e8ccc8d08c4ba6b09da59162c7c1b2 : FAILURE in 4m 51s