1 error[E0605]: non-primitive cast: `()` as `usize`
2 --> $DIR/issue-10991.rs:3:14
4 LL | let _t = nil as usize;
7 = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0605`.