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error: lifetime may not live long enough
--> $DIR/mir_check_cast_unsize.rs:6:5
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LL | fn bar<'a>(x: &'a u32) -> &'static dyn Debug {
| -- lifetime `'a` defined here
LL | x
| ^ returning this value requires that `'a` must outlive `'static`
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help: to declare that the trait object captures data from argument `x`, you can add an explicit `'a` lifetime bound
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LL | fn bar<'a>(x: &'a u32) -> &'static dyn Debug + 'a {
| ++++
error: aborting due to previous error
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