[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/a1ea6d62fed1472385e353d29f1011... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1d3fa77507104db49f1c742cf35a1a40 : SUCCESS in 4m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e729b814904c48c3a6cf7514d1d6cc2a : SUCCESS in 5m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0fe0d52221764945a41cd0be3f550ada : SUCCESS in 4m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d219806c6aa34e97b1f2bad09cd74d06 : FAILURE in 5m 36s