Build failed. https://zuul.opendev.org/t/openstack/buildset/33d4af5da2134876b5260aa8f433910b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/dcf626c7145941f1aa2d501f374a7192 : SUCCESS in 3m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6d35374db4d84fd3bbe402affcb07797 : SUCCESS in 3m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f316a032eb3c46a094db053366361ebe : FAILURE in 3m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0e08451c742d4b64b04075c9ba921247 : FAILURE in 3m 03s