Build failed. https://zuul.opendev.org/t/openstack/buildset/e80f3c0992b741b3811920afb4f2a3a8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5c68474aaf2f444da3f835c222ba4acd : SUCCESS in 3m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/847ff71d047d44df94d2b9ca1442e744 : SUCCESS in 4m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bf5286b5b2d042c1abadaed48f88a53b : SUCCESS in 4m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/06fc8f548900439c8d8e9967f8e40325 : FAILURE in 3m 55s