Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/afc4ac661a1f43f78632ab722e60319d : SUCCESS in 13m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1b07f1393c8b40d1add6735dbfb501d0 : SUCCESS in 7m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a2cf7eb4349040579fa05a6b2500f48a : SUCCESS in 8m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/adeeda3d747846ebb5d364d0c69ed8e9 : FAILURE in 5m 54s