[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/292903f2097b4235a12b64164802bf... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/847384655026416285da03b3fc1ddbc5 : SUCCESS in 3m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/631ad31b550140e39c4332979576b2b1 : FAILURE in 4m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/779b84b795c8407880224a4e5125be27 : SUCCESS in 3m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d0831027c5c54f12aa1cb205ff4a94fe : SUCCESS in 7m 10s