1 error[E0605]: non-primitive cast: `()` as `u32`
2 --> $DIR/cast-from-nil.rs:2:21
4 LL | fn main() { let u = (assert!(true) as u32); }
5 | ^^^^^^^^^^^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0605`.