[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/d10c078749c5491087070d039c3544... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/755310bd50e34a64a01b22f1ee71ebf9 : SUCCESS in 4m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fa38ea617879434fbf7feb3f60f045f0 : SUCCESS in 5m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c33c951237824238928c90218ac2328c : SUCCESS in 5m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1f417b5156584b0493e89f68ce8e3d7a : FAILURE in 4m 45s