[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/5d046ad57ff5482295938f07098292... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/30835151ed7b43dcbfa4c2df81f20420 : SUCCESS in 3m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7f8cbc97abcc4be9bae59fb402e5e779 : SUCCESS in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4bc428ae38cb489faf990ddef3508da0 : FAILURE in 2m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/372da916f9bd478d938d608a061a63ee : FAILURE in 2m 47s