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

Build failed. https://zuul.opendev.org/t/openstack/buildset/31f9315bf2d74cffb29690a84f3795... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6aa431cd67274329b5a2a5fb10d23175 : FAILURE in 3m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/68963780aee94c148981bde2501bffe5 : SUCCESS in 4m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5e0b81a83f1d4aec95dfc96d49ca552d : SUCCESS in 3m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/73be011d92544e759b656afeb412f0d4 : SUCCESS in 4m 11s