[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/904ee425658d4ed883cd302f198fa0... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/04ef07ced78143f9a52b97c4043bcee5 : SUCCESS in 4m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5c59c37ee72e467fb09feb6126392ca9 : SUCCESS in 4m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/885a5ace9d504606824a8a10183aa93f : FAILURE in 4m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c8423383375944ce82e9c289349c939e : FAILURE in 3m 31s