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

Build failed. https://zuul.opendev.org/t/openstack/buildset/f0be46ed0ec14354a29700389b8e22... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3ac946b461904a378f3cbd2c61cf06b6 : SUCCESS in 7m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/353e289f53ae434e8c8a29ba11c48fe2 : SUCCESS in 14m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/38b9c39bfb324d1db358bcbee6fdd133 : SUCCESS in 13m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c57816a64ed14bdfaf417c445a5735a8 : FAILURE in 13m 53s