dead_code lint doesn't catch unused const values

[japaric]

STR

const FOO: int = 0;
static BAR: int = 0;

fn main() {}

Output

const.rs:2:1: 2:21 warning: static item is never used: `BAR`, #[warn(dead_code)] on by default
const.rs:2 static BAR: int = 0;

Version

rustc 0.13.0-dev (45797a076 2014-10-10 07:52:00 +0000)