Build failed. https://zuul.opendev.org/t/openstack/buildset/09b117cbdf754ca58df99a13f513efee - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eb4760d3bce241d7af5e1a9ef15e16b7 : FAILURE in 6m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/81b29a38e8894e36b23bfccb9124c974 : SUCCESS in 5m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/51f5ed3b1c84474d8c90e8c73aac04ca : SUCCESS in 5m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7686102b0de04f398eb7c14567f0991d : SUCCESS in 6m 50s