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

Build failed. https://zuul.opendev.org/t/openstack/buildset/2d807062bcc54cfbaf1a070ef9896e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/236a8226867948bf9d1d6bb30aa3d9c8 : SUCCESS in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3aee42407587421f9ac1791af0413a14 : SUCCESS in 13m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b4173bd3e85a4b07bea6f19fd14b1f35 : FAILURE in 11m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fb6d43dcc4f54b1882e2573f531b1ad6 : SUCCESS in 11m 36s