[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/2d4f312baa074e03ba598886cd54eb... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ad7d1c9017a0465aa6db5e283b6c9f2a : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9aebc63a02424a51826bac926f43a561 : SUCCESS in 5m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/48dab395383d4364aa18a57b88f81f3f : SUCCESS in 5m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5087cbb3ee004a7e9793199ca95e8081 : FAILURE in 7m 21s