Build failed. https://zuul.opendev.org/t/openstack/buildset/4b8e224a6275412f982305b4fde3b729 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/84aecd2336a94b4bad13ccf3798a0fc6 : SUCCESS in 3m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a73c2e0ff02244efb34fdb70e63ac251 : SUCCESS in 5m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fbd5c43d4eb44291af222d2aa62a0ba5 : SUCCESS in 4m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/99b5d3adf008462489f4d65703c65d38 : FAILURE in 3m 57s