Recent openQA has this interesting "Investigation" tab which is intended to help with investigating failures. It already gives us some useful info for free (like a job settings diff to the most recent passed test), but we can probably provide some data to make it give us more useful info. There's a `diff_packages_to_last_good` and a `diff_sut_packages_to_last_good` which are probably expecting us to provide assets with specific filenames, or something, and which would be useful if we could make them work.