Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1840f0895f2e4a369caa1fff1a064ce1 : SUCCESS in 4m 27s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/06d1535dfc9040f6b8c2808d332e1396 : FAILURE in 3m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fa074e3ce526446f985f29d10530f695 : SUCCESS in 5m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/eb97304845ac4f95b944627f56f45f7e : FAILURE in 2m 54s