[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/5cd3c224903a4e2fb1beed33f191f9... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/79b20607892d41a79b3254536f9c819d : SUCCESS in 4m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/dbb8ef721b564dcf8ab7fd13f04abbe5 : SUCCESS in 4m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/98ed022f57e14116993650d78981e512 : FAILURE in 4m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/24764019bd1346adac199daa658e86d8 : FAILURE in 4m 58s