[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/099ed31955214c9cb490e042e3dbc9... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cac350fc1eae40f9a0671e77ccd926e9 : SUCCESS in 4m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/63858f4fbca64ce2bea8bce832e3b640 : SUCCESS in 4m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/22985fe7037a4353b838764fdfc3d1ec : SUCCESS in 5m 01s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/94e5b4dbc8bc4c6ca75898bdcca170d4 : FAILURE in 4m 01s