[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/feb3f1c512434f87851a81160ca1cb... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/66d51e350d3841ba9d9f91d932e488a5 : SUCCESS in 4m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/233ddd64270e472597b7f46a5ffb46cd : FAILURE in 4m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d32b40abdfb24bee8f63d982ef52a8ce : SUCCESS in 3m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7e5426ab8ba24b4bb8f392ddc6d926e6 : SUCCESS in 4m 08s