I don't think they mean multiple versions of the same crate (although can certainly happen too), but rather multiple different crates that cover the same functionality.
Re:Ladybird Browser adopts Rust
by cmrdporcupine on Monday February 23, 2026 @09:25PM
(#47132090)
this
tho duplicated crates with different major versions through transitive deps is also i believe possible
I don’t think this is true unless they differ in major versions no? Cargo will apply semantic versioning and pick the best available given the cargo.toml version constraints.