The Bunsen code in branch 'master' is the code that runs on https://builder.sourceware.org/testruns/ and that Frank will be presenting at GNU Cauldron 2022 on Sunday. This is also the code you should be using if you want to use/experiment/improve Bunsen going forward. The Bunsen prototype code in branch 'prototype/2022' is the code that I used for Bunsen demos in prior years. It's currently only used by myself and Martin Cermak on the non-public Bunsen setup for SystemTap testing. We plan to migrate to the newer code base fairly soon. The branch will be retained for historical interest; any good ideas in the prototype (such as the experimental regression-filtering analyses) will eventually be stolen and incorporated into the master branch. There will now be some Bugzilla noise emails as I update various old Bugzilla PRs to be relevant to the 'master' branch. All the best, Serhei