error: needlessly taken reference of both operands --> $DIR/op_ref.rs:11:15 | LL | let foo = &5 - &6; | ^^^^^^^ | = note: `-D clippy::op-ref` implied by `-D warnings` help: use the values directly | LL | let foo = 5 - 6; | ~ ~ error: taken reference of right operand --> $DIR/op_ref.rs:56:13 | LL | let z = x & &y; | ^^^^-- | | | help: use the right value directly: `y` error: aborting due to 2 previous errors