Build failed. https://zuul.opendev.org/t/openstack/buildset/e9be9849e3b844bb8a78c5a9350e7bfe - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/44adb18df2d440ca811f14c4da32362a : SUCCESS in 3m 31s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e7e36f6c074d48539093e16cf5d9df08 : SUCCESS in 4m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a12ee756fa5244798809abdc4869a3e2 : SUCCESS in 5m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ae44f3031f714b3694235180374b6100 : FAILURE in 3m 57s