[Openstack-stable-maint] Stable check of openstack/oslo.policy for ref refs/heads/stable/train failed

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ef8338185886428e8f14b9a81f5a4bb4 : SUCCESS in 4m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1b79a25d796049cd846105fee09022f3 : FAILURE in 4m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/887cfff91b894d25973b580212e8dd65 : FAILURE in 4m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1a61bfd630cc4cda9da721858e82a7ea : SUCCESS in 6m 26s