I believe the following set-up should trigger unused import warnings in `dep/dep.rs`, but it doesn't! rustc 0.12.0-pre-nightly (2e92c67dc 2014-08-28 23:56:20 +0000) Cargo.toml: ``` [package] name = "testbed" version = "0.0.0" authors = [] [[bin]] name = "testbed" path = "./main.rs" [dependencies.dep] name = "dep" path = "dep" ``` main.rs: ``` #[main] pub fn main() { } ``` dep/Cargo.toml: ``` [package] name = "dep" version = "0.0.0" authors = [] [lib] name = "dep" path = "dep.rs" ``` dep/dep.rs: ``` use std::iter; ```