rust/src/test/ui/conservative_impl_trait.stderr
Esteban Küber 5b0223e8c6 Reword rustc_on_unimplemented errors for Iterator
- Detect one element array of `Range` type, which is potentially a typo:
   `for _ in [0..10] {}` where iterating between `0` and `10` was intended.
   (#23141)
 - Suggest `.bytes()` and `.chars()` for `String`.
 - Suggest borrowing or `.iter()` on arrays (#36391)
 - Suggest using range literal when iterating on integers (#34353)
 - Do not suggest `.iter()` by default (#50773, #46806)
2018-10-09 18:53:53 -07:00

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error[E0277]: `()` is not an iterator
--> $DIR/conservative_impl_trait.rs:13:33
|
LL | fn will_ice(something: &u32) -> impl Iterator<Item = &u32> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ `()` is not an iterator
|
= help: the trait `std::iter::Iterator` is not implemented for `()`
= note: the return type of a function must have a statically known size
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.