Build failed. https://zuul.opendev.org/t/openstack/buildset/bfaa9930d7e84d64861cf0b2995267bd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/852314982fe646bcb2ecf4000777bd36 : FAILURE in 6m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/15cc321a9f2e4cabae2cdf2398536a92 : SUCCESS in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d3434f4fe6b840c0bd241e692877c5bb : SUCCESS in 4m 57s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/571fe21ebb594586bc3f6e1656d3fd7f : SUCCESS in 6m 05s