Build failed. https://zuul.opendev.org/t/openstack/buildset/1b3cf50c20c7426cb295d8d2af127d9e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f51a7a65f2544573856f0c775b51e602 : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cb58150c3aff4da0894032fe73e26722 : SUCCESS in 4m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8559e396ca25464395684bfb5715ec69 : SUCCESS in 4m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/31d6017202744460a48dc15526b7d69e : FAILURE in 3m 35s