[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/2678d783dc684d579b85b6d9995798... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9f759ba228944678b8cb6296287dbccd : SUCCESS in 4m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4125df2697544da6b52cef90bc27be38 : SUCCESS in 4m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4244ac9dfad34338a7d9e27b991c5314 : FAILURE in 4m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bb14a2d1925340c489e99f1e55d2b864 : FAILURE in 3m 46s