[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/64f28cd28d004118af7fac15c66850... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2f2f89e918ca4317b3e5f18aac68badf : SUCCESS in 3m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e3502a0fdca9465f82c365abfdf59e02 : FAILURE in 5m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9248533d10344aa0870dfecf126cacee : SUCCESS in 3m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/79969e9bdb1e4064bec9744c07e723e9 : SUCCESS in 5m 24s