Build failed. https://zuul.opendev.org/t/openstack/buildset/1b47bad037fc40d8b25cf0e0d85a4fd2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/675602f133d24769bcfac23bf229f1a4 : SUCCESS in 4m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c25813829dc04559883fea7b3a13625a : SUCCESS in 5m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9f00361d06284b5c84c618bcb35d4b27 : SUCCESS in 4m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/184506b222514a9dbdf29eb9bf39c658 : FAILURE in 4m 12s