See also a related comment in the overall thread saying "crates.io does not host compiled artifacts. If packages on crates.io differ from their Git repository it's because of a custom pre-build step of that particular package, so a deterministic compilation toolchain won't help here."
Prove me wrong! I'm open to it.
Or be that person who is too lazy to respond with an actual comment, downvotes, and probably assumes they are right.
It is important to remember that crates.io doesn't store binaries.