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

Build failed. https://zuul.opendev.org/t/openstack/buildset/313b222e6cee469da8f579d1fa64d6... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b7773e4161f047b8aeab06ab72989bae : FAILURE in 2m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6e7b108fcdde4f1783f786459f77f019 : FAILURE in 2m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c1ad21fce0184f28810560ff5be8f580 : FAILURE in 2m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/28ce67ee7d5e40deafec5e03e0f22618 : FAILURE in 2m 39s