[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/ca0dfe6d817b42ee8d875d63078b29... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/840bf8b299f547eea3663a4b19e51915 : SUCCESS in 3m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7cea426bdfd647219ab1075e467b61fb : SUCCESS in 3m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b5a681271f58401f89b04b03adbe46f7 : FAILURE in 3m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ae7533ed8b6e4ac1be39db46f5fe3a6b : FAILURE in 2m 32s