[Merge] ~schopin/ubuntu-seeds:rustc into ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:jammy

[Łukasz Zemczak]

Review: Approve

I think this is correct, this should basically only pull in the rustc binary as expected (from what I see in the germinate manpage, entries of %NAME mean 'all packages from the NAME source', otherwise those are binary packages only).
Let's try this!
-- 
https://code.launchpad.net/~schopin/ubuntu-seeds/+git/ubuntu-seeds/+merge/416688
Your team Ubuntu Core Development Team is subscribed to branch ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:jammy.