https://github.com/macournoyer/thin/issues/389
maybe we should reassign this to thin? (I'm not doing it now since I'm not yet 100% confident on my analysis)
For what it's worth I found this which seems to point towards our bug
being 'thin' not yet supporting rack 3:
- Bug#1100010: schleuder: API daemon fails: undefined method ... Gabriel Filion
- Bug#1100010: Info received (schleuder: API daemon fail... Gabriel Filion
