[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/4de3d73cb8f54ca98eb1df94f1787b... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4ab1c3eadc7345a5a2efd3ac63632f92 : SUCCESS in 3m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4d817d3a8e4d46f0856ad30d68ca8457 : SUCCESS in 4m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5b1865979e6546069d06d6b49085d23d : FAILURE in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9c003e3a04634d5cb88add222621a163 : FAILURE in 3m 07s