[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/e7dd87d17d374e65beb596406dc0de... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/02c4305acf6647d4bb50718d07be4d25 : SUCCESS in 4m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4087ed18f6d944a79bd1fce982427f97 : SUCCESS in 6m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4e5f6646527845ad8a47bd8a7191765c : SUCCESS in 5m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f52c64f03d184eb393d80977b2756034 : FAILURE in 4m 34s