> Rust links to libraries (via explicit or implicit `extern crate`) that it finds on the system via the ordinary OS-level library search path mechanism Nit: ru

> Rust links to libraries (via explicit or implicit `extern crate`) that it finds on the system via the ordinary OS-level library search path mechanism Nit: rustc gets passed each crate available to be used or extern crate via an --extern flag that specifies the name of the crate as well as the full path. The path is optional and if not specified rustc performs a search, but the name is mandatory. Cargo only uses the mode with both path and name specified. This also isn't an edition 2018 thing, it exists on older cargo versions too. It's possible to specify the same file under multiple names, then it's available to Rust programs under multiple names. It's also possible to specify multiple paths for the same name, but then only one will be taken, the first one which is available. Also, note that Cargo works in terms of packages, and rustc in terms of crates. A package can contain up to one library crate, and the names of the two don't have to match.