Build failed. https://zuul.opendev.org/t/openstack/buildset/aa43c360ad654ff8bc662812603a02a0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ad446d1c4a67452b8ff51b3bb96ab08a : FAILURE in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cdedea9c51114760a1380dd3e2790601 : SUCCESS in 3m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ae19ff86da67488aa99e7791d8c3419e : SUCCESS in 4m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/194677ab0a3d438ebe7ca40ce28dd55f : SUCCESS in 5m 04s