#![feature(plugin, custom_attribute)] #![plugin(clippy)] #![deny(cyclomatic_complexity)] #![deny(unused)] fn main() { kaboom(); } #[cyclomatic_complexity = "0"] fn kaboom() { //~ ERROR: the function has a cyclomatic complexity of 3 if 42 == 43 { panic!(); } else if "cake" == "lie" { println!("what?"); } }