Build failed. https://zuul.opendev.org/t/openstack/buildset/e88be70fea6a4258ab6712bb38d2df93 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2db2c98c904f4023bc4f5cf5d2b5b3ca : FAILURE in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/735702c7c733426faaae0dfc0d1054df : SUCCESS in 3m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ee2cd3205a394254a1bb60c34208df41 : SUCCESS in 3m 10s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/dec29edde354437691d668f0532b4127 : SUCCESS in 4m 05s