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

Build failed. https://zuul.opendev.org/t/openstack/buildset/94dd1cd5b66d4f45aa6b26da18b41e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9b7756c7812640448f231f7b33356dd7 : SUCCESS in 8m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3547c5a022fc4fc5ac1cd881e8a4f67a : SUCCESS in 13m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a3a2820efc50422bb3ca8bfbd60bf426 : FAILURE in 12m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/783538c1de4d4b51b36bf4beb2093f9b : SUCCESS in 10m 59s