Build failed. https://zuul.opendev.org/t/openstack/buildset/9f6cce3b931a49779b6706d9b2bef13a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9668fd2ca6424b9b80c4b0c0606e287f : FAILURE in 6m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9e1ea9cd27064fa3bfa7df1c0a400299 : SUCCESS in 6m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ae7a203fa5f34907a91a31e13531e00f : SUCCESS in 9m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9a1b7680838a45b2aa4c14ce436dc6f0 : SUCCESS in 9m 10s