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

Build failed. https://zuul.opendev.org/t/openstack/buildset/b49c9dadfa2745a2a4862b209c92a6... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/995fed20c19448afb1e44c4adac5e8b2 : FAILURE in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a8f3e97c6c254654a85d2f82b1614d04 : SUCCESS in 4m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/135194bd9c664a8baa21764b271b15cc : SUCCESS in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f4c29a2e06ea450e941336672308f271 : SUCCESS in 4m 05s