[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/e73c39ac45674ecb81910cb80d8e54... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ca34ef0af240420ab1927f069dff0ecd : SUCCESS in 4m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0496c00f9ceb4ac0a1dbeb45308869f5 : FAILURE in 3m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f0a96e69d334471fad62f639c0533f5f : SUCCESS in 5m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/63057021d52549bd833088c44e2334c2 : SUCCESS in 6m 15s