// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(tool_lints)]
-
-
#![allow(unused_variables, clippy::blacklisted_name)]
use std::collections::HashSet;
let tracked_fds: HashSet<i32> = HashSet::new();
let new_fds = HashSet::new();
let unwanted = &tracked_fds - &new_fds;
-
+
let foo = &5 - &6;
let bar = String::new();