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error[E0282]: type annotations needed
--> $DIR/method-resolution4.rs:13:9
|
LL | foo(false).next().unwrap();
| ^^^^^^^^^^ cannot infer type
error[E0308]: mismatched types
--> $DIR/method-resolution4.rs:16:5
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LL | fn foo(b: bool) -> impl Iterator<Item = ()> {
| ------------------------ the expected opaque type
...
LL | std::iter::empty()
| ^^^^^^^^^^^^^^^^^^ types differ
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= note: expected opaque type `impl Iterator<Item = ()>`
found struct `std::iter::Empty<_>`
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0282, E0308.
For more information about an error, try `rustc --explain E0282`.
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