Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7fb93f28e816425a907e75b1e904e7b7 : SUCCESS in 4m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e1403be51b4e4e14b376a9003d2b5956 : SUCCESS in 7m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/caaa39b336f8443687ba2245fc93e686 : FAILURE in 6m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/895d623df2054d0b8a5ffdd246b1e27d : FAILURE in 5m 59s