Build failed. https://zuul.opendev.org/t/openstack/buildset/09ffdfbff83046f09a5f1276d165868c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0aa85114d34e45759d91a79b3188391e : SUCCESS in 4m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ebd5bb1f30364cb280f112a186b1a221 : FAILURE in 3m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f5b815c199f448a3b7645ccf038819b0 : SUCCESS in 4m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/233fa4b2450d42c2b39b6ac5470381a3 : SUCCESS in 6m 10s