Build failed. https://zuul.opendev.org/t/openstack/buildset/ec7f5a1ce755483dba1cce5e774405e7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3b7ec473cfe74501b19da7eb89a53537 : SUCCESS in 3m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/26f2eb491b4b4cd58cac887a2135ca90 : SUCCESS in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d78a644b656a4b1ba636e1fd1e2843da : FAILURE in 3m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9b6baea1f60745d1b496bd7d6646e4b8 : FAILURE in 2m 56s