Here are a few PR's that want to update to a recent docker-py commit, but are blocked because the experimental jenkins test is failing in test_prune_images:
#33005
#32122

Here's an example console log of a test failure:
https://jenkins.dockerproject.org/job/Docker-PRs-experimental/34249/console

I've been able to reproduce the issue locally, but am still determining how to pull the relevant logs, will post them soon.