[Openstack-stable-maint] Stable check of openstack/automaton for ref refs/heads/stable/ussuri failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/c27c842538934b3ab6cac1b33e88e8... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/23dfc12f69e345118b318e0c1959ff8a : SUCCESS in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ecadd62291554bebb193ed94d5c4a95b : POST_FAILURE in 3m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/481213ffe8054dc891ac0ca4876f5ea3 : SUCCESS in 3m 57s