1 error[E0605]: non-primitive cast: `NonNullary` as `isize`
2 --> $DIR/tag-variant-cast-non-nullary.rs:8:15
4 LL | let val = v as isize;
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`.