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error[E0521]: borrowed data escapes outside of closure
--> $DIR/regions-escape-unboxed-closure.rs:5:23
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LL | let mut x: Option<&isize> = None;
| ----- `x` declared here, outside of the closure body
LL | with_int(&mut |y| x = Some(y));
| - ^^^^^^^^^^^ `y` escapes the closure body here
| |
| `y` is a reference that is only valid in the closure body
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0521`.
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