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

Build failed. https://zuul.opendev.org/t/openstack/buildset/9bb49194b62e440787c69b22a1a8ed... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fdb4a76bcf5c4ad4888ac8a7de19bbe5 : FAILURE in 2m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e9051649215b498b9d0d6f5bd6c0a95a : FAILURE in 3m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d0d0d39fb20948b9ae6d3fd509776cc7 : FAILURE in 2m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/12933c63d8e24d69a3817a83100fe501 : FAILURE in 2m 46s