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

Build failed. https://zuul.opendev.org/t/openstack/buildset/23f26f0409e9419cbe9ddac6348061... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1714947b33bd47ee88f9d5006a7858f2 : FAILURE in 3m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3aa5a7477d5646caa0c3edfcb9935667 : SUCCESS in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/814a51e949384ee0b04c9ef29d7c29bd : SUCCESS in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/472b5b028a394518b227a5d270a91dc6 : SUCCESS in 3m 15s