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error[E0277]: `main` has invalid return type `i32`
--> $DIR/termination-trait-main-i32.rs:1:14
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LL | fn main() -> i32 {
| ^^^ `main` can only return types that implement `Termination`
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= help: consider using `()`, or a `Result`
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.
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