[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/8cf6419be2344863aa8a03e74b1af2... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f746f09d93794fb6b6c8640de0f86c70 : SUCCESS in 4m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7d9f6d754cb74ff1837b6a3e98610979 : SUCCESS in 3m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2a857cfa97f44b7da1de291b456c3adc : FAILURE in 3m 09s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1c30a0390fc34a1dae2e402dfd8f783a : FAILURE in 4m 14s