[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/ffd7bf3f3b23439383ba30d08bee2f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e522dee4c3574562bb356e511a94fc95 : SUCCESS in 4m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/afa2b217db6e4be69d390e9f88a02c6e : FAILURE in 4m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/24e162012e654d94a8ee9b4f40b0ca10 : SUCCESS in 4m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/41f4f7ed4efa4789b1965b59d1795eaa : SUCCESS in 3m 43s