Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/526d1af9a545472cbb5bb03b9e9c2356 : SUCCESS in 6m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/75bfdfdb23e3409ab07c7e1393b18aae : SUCCESS in 6m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/eb358f6a7d344b1f94af98b81749edba : FAILURE in 5m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ca6e9e20a53e4a76b329952ba0357324 : FAILURE in 4m 11s