Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d360588da285432c88a4563aa90fd845 : SUCCESS in 4m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/10f1e253ba004f61abb9514f5f792c73 : SUCCESS in 3m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0580a4121ecf4f6f9b574979ef7205aa : SUCCESS in 2m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4f87fd711e434e47b106c459adcc01b0 : FAILURE in 4m 06s