error[E0133]: initializing type with `rustc_layout_scalar_valid_range` attr is unsafe and requires unsafe function or block --> $DIR/ranged_ints.rs:10:14 | LL | let _x = NonZero(0); | ^^^^^^^^^^ initializing type with `rustc_layout_scalar_valid_range` attr | = note: initializing a layout restricted type's field with a value outside the valid range is undefined behavior error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0133`.