error[E0308]: mismatched types --> $DIR/coerce-reborrow-multi-arg-fail.rs:4:18 | LL | test(&mut 7, &7); | ---- ------ ^^ types differ in mutability | | | | | expected all arguments to be this `&mut {integer}` type because they need to match the type of this parameter | arguments to this function are incorrect | = note: expected mutable reference `&mut {integer}` found reference `&{integer}` note: function defined here --> $DIR/coerce-reborrow-multi-arg-fail.rs:1:4 | LL | fn test(_a: T, _b: T) {} | ^^^^ - ----- ----- this parameter needs to match the `&mut {integer}` type of `_a` | | | | | `_b` needs to match the `&mut {integer}` type of this parameter | `_a` and `_b` all reference this parameter T error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0308`.