Build failed. https://zuul.opendev.org/t/openstack/buildset/2c22c1d86f18424ab6984f68b3ee8ee1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/56c0b8d652b64fd8888ca6a536f92952 : SUCCESS in 2m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8370b0881d1149729dea9922a87d2f10 : SUCCESS in 2m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/54558010f9e847f7aa91fac6d129b6a8 : SUCCESS in 3m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b96df87a8aaf470c9d04368c9f9f041a : FAILURE in 2m 56s