[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/d5966c2b2343414dabf282f041e858... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7fb79a41fc5a4b42856327e224cae9c5 : SUCCESS in 3m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c0f4a8fdddf146509f78588e73b32b23 : FAILURE in 4m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3a500e20f2fa4ddfbc494a0eac4f56c8 : SUCCESS in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/af9826b369884ad2b83963686f5183fe : SUCCESS in 3m 19s