error: used `unwrap()` on `an Option` value. If you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message --> $DIR/unwrap.rs:5:13 | LL | let _ = opt.unwrap(); | ^^^^^^^^^^^^ | = note: `-D clippy::option-unwrap-used` implied by `-D warnings` error: used `unwrap()` on `a Result` value. If you don't want to handle the `Err` case gracefully, consider using `expect()` to provide a better panic message --> $DIR/unwrap.rs:10:13 | LL | let _ = res.unwrap(); | ^^^^^^^^^^^^ | = note: `-D clippy::result-unwrap-used` implied by `-D warnings` error: aborting due to 2 previous errors