1 error: unsatisfied lifetime constraints
2 --> $DIR/issue-49824.rs:22:9
7 | |return type of closure is [closure@$DIR/issue-49824.rs:22:9: 24:10 x:&'2 mut i32]
8 | lifetime `'1` represents this closure's body
10 LL | | let _y = &mut x;
12 | |_________^ returning this value requires that `'1` must outlive `'2`
14 = note: closure implements `FnMut`, so references to captured variables can't escape the closure
16 error: aborting due to previous error