#![warn(clippy::expect_used)] #![allow(clippy::unnecessary_literal_unwrap)] fn expect_option() { let opt = Some(0); let _ = opt.expect(""); //~^ ERROR: used `expect()` on an `Option` value } fn expect_result() { let res: Result = Ok(0); let _ = res.expect(""); //~^ ERROR: used `expect()` on a `Result` value let _ = res.expect_err(""); //~^ ERROR: used `expect_err()` on a `Result` value } fn main() { expect_option(); expect_result(); }