Build failed. https://zuul.opendev.org/t/openstack/buildset/0100fac489ae448ca84e9da096006a77 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b99f3081fa1b441eb45e11f495846698 : FAILURE in 4m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b1bfbc0013494bc6995d74edcef3a0fb : SUCCESS in 4m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/abf1a1465de0469daea7684bb637ae53 : SUCCESS in 4m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0f7fabbed97b4692b7ac5fdc8be5e6ee : SUCCESS in 4m 09s