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error[E0282]: type annotations needed
--> $DIR/issue-5062.rs:1:29
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LL | fn main() { format!("{:?}", None); }
| ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option`
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help: consider specifying the generic argument
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LL | fn main() { format!("{:?}", None::<T>); }
| +++++
error: aborting due to previous error
For more information about this error, try `rustc --explain E0282`.
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