LL | let _: &dyn I32Iterator<Item = u32> = &vec![42].into_iter();
| ^^^^^^^^^^^^^^^^^^^^^ expected i32, found u32
|
- = note: expected type `i32`
- found type `u32`
= note: required for the cast to the object type `dyn std::iter::Iterator<Item = u32, Item = i32>`
error: aborting due to previous error