Build failed. https://zuul.opendev.org/t/openstack/buildset/42dc9dd8595f4567a6b161aa30b96fe6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d3a23091552e4066816ce4fc5910805b : SUCCESS in 5m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7a972ec9ad25404880d25b35479ce3a4 : SUCCESS in 5m 07s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7dfbcfd49df2405f8a268a636ff4261f : SUCCESS in 4m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/66cbb7578e5e40e8a6e1f275ca432ae7 : FAILURE in 4m 17s