[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/40c90e65900e471082fa892146c077... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d07f29cb4a5841f59f368feed54a0441 : SUCCESS in 4m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fcc5f7dccac34dcda3051f2dd9c51d52 : FAILURE in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/48671c3324d948f1926802455148c889 : SUCCESS in 3m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a6b4faa12e8a4e418f75b1f505d5eb7a : SUCCESS in 3m 43s