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

Build failed. https://zuul.opendev.org/t/openstack/buildset/4a507e1233f54a9b921e4f39e019b9... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/84b6aa74f7eb42e681ef5c786c8c8d86 : SUCCESS in 5m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/69f60e4d2b4a417caf3042db4817eb75 : FAILURE in 13m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c4500a5160e4402391650b61a2a67723 : SUCCESS in 13m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c8c019527bdb466186e9ba9107465914 : SUCCESS in 15m 24s