[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/e1f4044e2b5b4e72ab97e4b67feb96... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7a8d074cb82344d9b8313aabed056e5b : SUCCESS in 3m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7dd4f3545f554c8b8c18e01a12ba15bf : FAILURE in 3m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/14cc73dcaccd4a2da0316e0e289f9533 : SUCCESS in 3m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9aa5019fd4ec4a059bcfdbad9e384b87 : SUCCESS in 3m 33s