[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/1d7973f55f1b44778d45ebdb372870... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1f9cecb6d3644834b22c747b6bd40507 : SUCCESS in 3m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/21b57b1563664a1595cd3c72f40483c0 : SUCCESS in 3m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5f8db7aade0747b8ac92f3db05b500ee : FAILURE in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5b3568a3808f4bb683d7193abc50ba23 : FAILURE in 2m 50s