[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/7118e55de19548daa8f67edbb0f1f7... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f6bd4a13924a477691eff2f8fbeb5ffb : SUCCESS in 3m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/34c22c7b75364022bed5c0a1272f3cab : SUCCESS in 4m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ca2393ba2ce346be86b05e188ff557bb : SUCCESS in 5m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8a0ba28921194242a8a0fc9b205392d8 : FAILURE in 4m 15s