error: used `expect()` on `an Option` value --> $DIR/expect.rs:5:13 | LL | let _ = opt.expect(""); | ^^^^^^^^^^^^^^ | = note: `-D clippy::expect-used` implied by `-D warnings` = help: if this value is `None`, it will panic error: used `expect()` on `a Result` value --> $DIR/expect.rs:10:13 | LL | let _ = res.expect(""); | ^^^^^^^^^^^^^^ | = help: if this value is an `Err`, it will panic error: aborting due to 2 previous errors