Build failed. https://zuul.opendev.org/t/openstack/buildset/f01dcb6dc0764096a7ba213a3c7f6325 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4648c8ade4194632ba562f1049ebb5f5 : SUCCESS in 2m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4ba55491d0e34e219dc89ba996116ce0 : SUCCESS in 3m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e718fadf20ff4b5a9e974a5e1727d2f4 : FAILURE in 2m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/48dbc095b75747238f3c6991b8216689 : FAILURE in 2m 49s