Build failed. https://zuul.opendev.org/t/openstack/buildset/dcc8251328cc42aaa3c9824dbbfd2324 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/65a4ca5bb93d4566a3c1f58a4dff0846 : SUCCESS in 4m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6be6033f02b941ddab0535085a6c0504 : SUCCESS in 2m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ddf903f4970049fea37c00e5cdacdbfb : SUCCESS in 2m 57s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/109607cec56843acb9df67edeea8d243 : FAILURE in 2m 27s