[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/66fba01317ab4bfc89d84ada5f0c49... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/792539e1227746f7a8a007e5747f9c96 : SUCCESS in 4m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/eb813f00ac5349ebb5714f9e3cc55b79 : FAILURE in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7ffceab96beb438ab5f3c9b8dfa99abe : SUCCESS in 3m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3a72268e8faa418d9462a452368c0a7c : SUCCESS in 3m 45s