[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/d9254782b2744627b5a2e296580b72... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9fcc063bd08a437ea4a2f875bf664f19 : SUCCESS in 4m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bbf5cad89ffc49b5abc62e87d21010cd : SUCCESS in 3m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fe6a331d61a44051a157a470d0e3344c : FAILURE in 4m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ef523c6a5cff4016b2c68b6933e1c191 : FAILURE in 3m 28s