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error[E0599]: no method named `is_empty` found for struct `Foo` in the current scope
--> $DIR/method-suggestion-no-duplication.rs:7:15
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LL | struct Foo;
| ---------- method `is_empty` not found for this struct
...
LL | foo(|s| s.is_empty());
| ^^^^^^^^ method not found in `Foo`
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= help: items from traits can only be used if the trait is implemented and in scope
= note: the following trait defines an item `is_empty`, perhaps you need to implement it:
candidate #1: `ExactSizeIterator`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0599`.
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