[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/06f04036c33149cf896d30b5f13d5c... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1c946a2f89054204a2aeadcab70bcc4b : SUCCESS in 4m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b54df8b60a0344cf94a41092ee27ee33 : SUCCESS in 8m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/dc7556c5a5dd4e24b7030729d93e562f : SUCCESS in 6m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/79b8a799d2a8462c8db84e3ac679c55d : FAILURE in 3m 54s