[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/14cb7d4a9f4e4b4bb19d5fac984dbb... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5871919f4d9b487a8286f9d7a74c5cd9 : SUCCESS in 3m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8065d655f73843fe8298a89b48e9728a : FAILURE in 4m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5c906fe75c89426c8f5066aa93b0e568 : SUCCESS in 4m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/85b1854912bf4574bd0de0d72f4412d2 : SUCCESS in 3m 43s