Although rust-ruma-state-res is the only remaining binary dependency, there are a large number of autopkgtest dependencies. These are disguised because the Debian Rust team sets skip-not-installable by default so these autopkgtests would report "Neutral" results if rust-criterion-0.3 were uninstallable (like it is now because of the "new" rust-itertools).
https://codesearch.debian.net/search?q=path%3Adebian%2Ftests%2Fcontrol+librust-criterion-0.3&perpkg=1 Thank you, Jeremy Bícha
