[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/175d21a1838244b0b8bbedcb5ede1b... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/62102eafc1a147a5974aaba77484f13c : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/65c707d9531840fc96ad5c5cb4ed67fd : SUCCESS in 4m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/eb7fb1dadb014457ae178c68f78b48b1 : SUCCESS in 5m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4eadfc87d4b1468a8a7313105077ed49 : FAILURE in 5m 25s