Build failed. https://zuul.opendev.org/t/openstack/buildset/cff17a5dde064d13b4d99b441db10035 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e5c3601601c4439e867a74255da60a4f : SUCCESS in 4m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/08828d6d91b3429484ba79bb89180265 : FAILURE in 4m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b92babca966548efb826d3b1d717b18d : SUCCESS in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3f982da0407a407392990292404a0836 : SUCCESS in 4m 34s