It does, but all dependencies are put in the same folder, which is why the original poster conflated them. If you look at the linked Cargo.toml you'll see [

It does, but all dependencies are put in the same folder, which is why the original poster conflated them. If you look at the linked Cargo.toml you'll see [dependencies] libc = "0.2.139" <snip> [dev-dependencies] pretty_assertions = "1.3.0" tempfile = "3.5.0"