Build failed. https://zuul.opendev.org/t/openstack/buildset/68aa2d0db6f64633ac60d133896a0a20 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/965e6fe87ba2490599b6f6bd393a0d2d : FAILURE in 6m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/15c72077a2c447c58b1d42b66b5f5bea : SUCCESS in 5m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/869c314560ab4ecda1a00c635cb4473f : SUCCESS in 5m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c8d60c880f7b4a3db03eb86676ee31d3 : SUCCESS in 5m 53s