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error[E0308]: mismatched types
--> $DIR/issue-24036.rs:3:9
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LL | let mut x = |c| c + 1;
| --- the expected closure
LL | x = |c| c + 1;
| ^^^^^^^^^ expected closure, found a different closure
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= note: expected closure `[closure@$DIR/issue-24036.rs:2:17: 2:20]`
found closure `[closure@$DIR/issue-24036.rs:3:9: 3:12]`
= note: no two closures, even if identical, have the same type
= help: consider boxing your closure and/or using it as a trait object
error[E0282]: type annotations needed
--> $DIR/issue-24036.rs:9:15
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LL | 1 => |c| c + 1,
| ^
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help: consider giving this closure parameter an explicit type
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LL | 1 => |c: _| c + 1,
| +++
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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