[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/c3ee0816466e40f2a4a87f877d779c... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3e3226b4138f499797cc37859429f863 : SUCCESS in 4m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8b2978f6d42e4802bae6690f851b9f11 : SUCCESS in 6m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c634990e8a0f4385a429af341c313b79 : SUCCESS in 5m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bdbde28ffb8649f5bc0357d67598b26d : FAILURE in 6m 52s