Build failed. https://zuul.opendev.org/t/openstack/buildset/8a9b8a40564f4027bbbad25d2352641b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4882cc10f8f943fca69106a7e4617bb6 : SUCCESS in 4m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a9ee0356f5834b6089d8e8c438f3b9c8 : SUCCESS in 4m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/217798a9e1f748d68288289af15c4de0 : FAILURE in 4m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bf6d2e18204c41299706c4dce764799d : FAILURE in 4m 16s