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

Build failed. https://zuul.opendev.org/t/openstack/buildset/0527219c4f0c4240b5889365fccfe0... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ba41a0e0fb894017ab0f553e769cd446 : SUCCESS in 3m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bcbe0a9bad3d46ccb9fbe69d05fcc41c : FAILURE in 3m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4f3d89c0cdbe494a8c915ef7b2f2e12e : SUCCESS in 5m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8ca8552945bd441a901d90f857265dbb : SUCCESS in 4m 14s