Build failed. https://zuul.opendev.org/t/openstack/buildset/a898d36850bf4c40af6059de05f36c60 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fe56087bd4b146c8a768bea4d12c820d : FAILURE in 6m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/76753309f15c4c9486fe5aa5b0343f2e : SUCCESS in 5m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/eaf3d0856604498f8134518590e72175 : SUCCESS in 5m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/82416ba8903f4637b066a58625117f63 : SUCCESS in 6m 41s