Build failed. https://zuul.opendev.org/t/openstack/buildset/9ca1ac3b713e41eba1c217cbbe000409 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/08fbf83324cb4774934d22be414d4ef2 : SUCCESS in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f56f9a67e9fd4412a197c87a7a1b97bd : SUCCESS in 5m 27s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/506147df5f604a3a81af667cfe38ad9d : SUCCESS in 5m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7a028be4f52d4a0c8d0ba48e70927428 : FAILURE in 3m 56s