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21 lines
783 B
Plaintext
21 lines
783 B
Plaintext
error: lifetime may not live long enough
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--> $DIR/ex3-both-anon-regions-both-are-structs.rs:6:5
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LL | fn foo(mut x: Vec<Ref>, y: Ref) {
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| ----- - has type `Ref<'1>`
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| |
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| has type `Vec<Ref<'2>>`
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LL | x.push(y);
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| ^^^^^^^^^ argument requires that `'1` must outlive `'2`
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= note: requirement occurs because of a mutable reference to `Vec<Ref<'_>>`
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= note: mutable references are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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help: consider introducing a named lifetime parameter
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LL | fn foo<'a>(mut x: Vec<Ref<'a>>, y: Ref<'a>) {
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| ++++ ++++ ++++
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error: aborting due to 1 previous error
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