--- /dev/null
+error: needlessly taken reference of both operands
+ --> $DIR/op_ref.rs:12:15
+ |
+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:57:13
+ |
+LL | let z = x & &y;
+ | ^^^^--
+ | |
+ | help: use the right value directly: `y`
+
+error: aborting due to 2 previous errors
+