[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/930e20e44db949dcad633ec6785374... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f12dc9a1f2bc476fb23711078ec94c90 : SUCCESS in 5m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3fe41ccf0cb44225b6e6753583a723be : FAILURE in 4m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/014df84fd0514a8d8a404bf7eaa0a90a : SUCCESS in 4m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0869eed8456c43f7bc2d5abd18f7de2d : SUCCESS in 4m 50s