Build failed. https://zuul.opendev.org/t/openstack/buildset/d41bffb0b01047969ea7acb8090c48e5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/48e8ea949c1a4490873aa5c3df2ebcd8 : SUCCESS in 3m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/86faf1327d844170ac26d6a9a3bee5f1 : SUCCESS in 4m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/213aad6a1801497794717cc82e891696 : SUCCESS in 3m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/14628f8131544a5fbac63c38e4826b3e : FAILURE in 3m 02s