[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/bd0784c38d1246a4a8043e3895a7f5... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8c890ee711804688ab178f2b478e5242 : SUCCESS in 3m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8277bba580e8448fa0dc4b154b64e2b2 : SUCCESS in 5m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c347d0d799a34b1f9a25321f47a4950b : SUCCESS in 5m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9128499ad84d4ff3a64faef2f54bf32d : FAILURE in 3m 53s