Build failed. https://zuul.opendev.org/t/openstack/buildset/88adc95a15e44a5f82d579cb206b690b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c4ab0ad78d374fa69a55c6f86614bae5 : SUCCESS in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f92f4f23ecf84c618196d6ec4567feaa : SUCCESS in 5m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cdb339ea99794e19bbd7c09219f75c79 : SUCCESS in 4m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f243d28495c04fd28ef14a9ea7cbed58 : FAILURE in 4m 42s