1 error[E0605]: non-primitive cast: `()` as `usize`
2 --> $DIR/issue-10991.rs:3:14
4 LL | let _t = nil as usize;
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`.