[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/e2528e2873df40d6afde612eded872... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fd54fb1c18b24f3c982b43364c5d5296 : SUCCESS in 3m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2cfff3e4f2c04333a3f2f2dadb916e98 : SUCCESS in 3m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/10aa26f49afe4e0dad491879c341f6a9 : FAILURE in 4m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/18faace936cf481792c5b28b04dece2f : FAILURE in 2m 53s