[Openstack-stable-maint] Stable check of openstack/oslo.log for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/048354cc00a14625b3a5b423e860e3... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9250a0e2ad184b9fa4ffebd860068e46 : SUCCESS in 5m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/15e5e8ab69d44ebfaa4676c45d34cffe : SUCCESS in 4m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8a7f919ac042487caad0c61964faaa19 : FAILURE in 3m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3b88a629a757432db769f475d0109297 : FAILURE in 4m 21s