[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/7cf1a1ca63af472daae052dd324f83... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e2fa31bbd74c4bf082eef4cd6cbcc442 : SUCCESS in 4m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/983e884aecb74e1d9c886f20ba204678 : SUCCESS in 3m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5aa2f1b8c946438c92ba47396db4ff73 : FAILURE in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/dac157479a494e5b8126da78d0f8c09a : FAILURE in 3m 54s