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error: lifetime may not live long enough
--> $DIR/mir_check_cast_closure.rs:5:5
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LL | fn bar<'a, 'b>() -> fn(&'a u32, &'b u32) -> &'a u32 {
| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
LL | let g: fn(_, _) -> _ = |_x, y| y;
LL | g
| ^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
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= help: consider adding the following bound: `'b: 'a`
error: aborting due to previous error
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