Build failed. https://zuul.opendev.org/t/openstack/buildset/96e796c12f7f4cc18222d3a7bc9bbbba - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d0aeb1f4957b487b8e5ebfcdb45e5f4a : SUCCESS in 3m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9444d05760404995912dea3f2a936e33 : SUCCESS in 4m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f25535d82c574de09ede8bd739079a21 : SUCCESS in 5m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9cdfebcee05a476e9fb7eff245cdadf5 : FAILURE in 4m 56s