Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fc341942b35645bfa3147bdf3b236776 : SUCCESS in 4m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e4a228c36c984083ac112a1d580148c6 : SUCCESS in 6m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8417f0fd00f447e894c98a7e0016b95b : FAILURE in 5m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/357954890cfe495094cda1c4af195f0e : FAILURE in 4m 52s