[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/e1c2b74f370044a1990da1546c0338... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bde86656ba564afa8d3b6f433e7539a4 : SUCCESS in 3m 31s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a830a2e65bd943beb046c323fa79d9cc : SUCCESS in 4m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ee4c024f5f23402e98b4c0ed39c7f023 : FAILURE in 3m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4ec634be3d874c2e8772c19c7e75cc2f : FAILURE in 2m 32s