rust/tests/ui/suggestions/suggest-box.rs

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// run-rustfix

fn main() {
    let _x: Box<dyn Fn() -> Result<(), ()>> = || { //~ ERROR mismatched types
        Err(())?;
        Ok(())
    };
}
Suggest `Box::new` when appropriate When encountering a boxed value as expected and a stack allocated value that could be boxed to fulfill the expectation, like in the following snippet, suggest `Box::new` wrapping. 2019-08-13 03:22:58 +00:00			`// run-rustfix`

			`fn main() {`
			`let _x: Box<dyn Fn() -> Result<(), ()>> = \|\| { //~ ERROR mismatched types`
			`Err(())?;`
			`Ok(())`
			`};`
			`}`