Build failed. https://zuul.opendev.org/t/openstack/buildset/b1b35189ae054b61bb9fc0f0b0b41c93 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/047347314a9848f58f93344b11d982a4 : FAILURE in 6m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/94404058c4f0479d97f7411d7275ab0b : SUCCESS in 6m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/df317353dd6a448ea7c405ae6a63657e : SUCCESS in 7m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d23b4a0791a047289c83373f966fc126 : SUCCESS in 7m 43s