error: this expression borrows a reference (`&i32`) that is immediately dereferenced by the compiler --> $DIR/needless_borrow.rs:14:15 | LL | let c = x(&&a); | ^^^ help: change this to: `&a` | = note: `-D clippy::needless-borrow` implied by `-D warnings` error: this pattern creates a reference to a reference --> $DIR/needless_borrow.rs:21:17 | LL | if let Some(ref cake) = Some(&5) {} | ^^^^^^^^ help: change this to: `cake` error: this expression borrows a reference (`&i32`) that is immediately dereferenced by the compiler --> $DIR/needless_borrow.rs:28:15 | LL | 46 => &&a, | ^^^ help: change this to: `&a` error: this pattern creates a reference to a reference --> $DIR/needless_borrow.rs:51:31 | LL | let _ = v.iter().filter(|&ref a| a.is_empty()); | ^^^^^ help: change this to: `a` error: aborting due to 4 previous errors