Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4636074fbd7c4e858ad6733c188a6307 : SUCCESS in 10m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0ff881cfd7314b68bee47e27f3b99005 : SUCCESS in 6m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a271cb7ef4354b548bf706f519c4b54c : FAILURE in 7m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2de9db9a35764386bb27e7c05ca9acf9 : SUCCESS in 8m 42s