| error: lifetime may not live long enough |
| --> $DIR/dyn-trait-underscore.rs:12:5 |
| LL | fn a<T>(items: &[T]) -> Box<dyn Iterator<Item=&T>> { |
| | - let's call the lifetime of this reference `'1` |
| LL | // ^^^^^^^^^^^^^^^^^^^^^ bound *here* defaults to `'static` |
| LL | Box::new(items.iter()) |
| | ^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'1` must outlive `'static` |
| help: to declare that the trait object captures data from argument `items`, you can add an explicit `'_` lifetime bound |
| LL | fn a<T>(items: &[T]) -> Box<dyn Iterator<Item=&T> + '_> { |
| error: aborting due to previous error |
