File: regions-escape-unboxed-closure.stderr

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error[E0521]: borrowed data escapes outside of closure
  --> $DIR/regions-escape-unboxed-closure.rs:5:23
   |
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`.