Build failed. https://zuul.opendev.org/t/openstack/buildset/e4c7a1788b364b2096569fa96f522049 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ee44d6938fc14b6ea09a7c89c901aef4 : SUCCESS in 3m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d3e5238d49dc419994aea8e3d3618524 : SUCCESS in 3m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1d1f82da7fc242f886432a35ec589e7a : SUCCESS in 3m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9e1658bb8e4a497d9e83c45da248bb25 : FAILURE in 2m 58s