Build failed. https://zuul.opendev.org/t/openstack/buildset/0a41c7ae1d4e429bae57e3193f607319 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/569db11983c9492ba3d663ecab9b7729 : SUCCESS in 4m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/734bcb996ca14961a01fa0117fefb185 : FAILURE in 4m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e6852abef3f240da90450c7420a30b8e : SUCCESS in 4m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fff18cd843184e0fa7f8c821430088c5 : SUCCESS in 5m 15s