#![feature(plugin)] #![plugin(clippy)] #![deny(clippy)] #![deny(if_not_else)] fn bla() -> bool { unimplemented!() } fn main() { if !bla() { //~ ERROR: Unnecessary boolean `not` operation println!("Bugs"); } else { println!("Bunny"); } if 4 != 5 { //~ ERROR: Unnecessary `!=` operation println!("Bugs"); } else { println!("Bunny"); } }