error[E0308]: mismatched types --> $DIR/coerce-block-tail-26978.rs:9:9 | LL | f(&{x}); | ^ expected `i32`, found `Box` | = note: expected type `i32` found struct `Box` help: consider unboxing the value | LL | f(&{*x}); | + error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0308`.