Build failed. https://zuul.opendev.org/t/openstack/buildset/2f93c448b99d4fcd93b79d6daa3ff74e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/67c730aec6d74d83bd75b85d933679c3 : SUCCESS in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/87fb02652d5c4516a2fc85a138f178db : SUCCESS in 6m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/57c34ee400e64cdfa7fd6967128a7560 : SUCCESS in 4m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/57aecb6e5a584070a957f721651c0957 : FAILURE in 3m 48s