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error: lifetime may not live long enough
--> $DIR/ex3-both-anon-regions-both-are-structs-3.rs:7:5
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LL | fn foo(mut x: Ref) {
| -----
| |
| has type `Ref<'_, '1>`
| has type `Ref<'2, '_>`
LL | x.a = x.b;
| ^^^^^^^^^ assignment requires that `'1` must outlive `'2`
|
help: consider introducing a named lifetime parameter
|
LL | fn foo<'a>(mut x: Ref<'a, 'a>) {
| ++++ ++++++++
error: aborting due to 1 previous error
|