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21 lines
934 B
Plaintext
21 lines
934 B
Plaintext
error: lifetime may not live long enough
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--> $DIR/underscore-lifetime-elison-mismatch.rs:1:42
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LL | fn foo(x: &mut Vec<&'_ u8>, y: &'_ u8) { x.push(y); }
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| - - ^^^^^^^^^ argument requires that `'1` must outlive `'2`
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| | |
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| | let's call the lifetime of this reference `'1`
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| let's call the lifetime of this reference `'2`
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= note: requirement occurs because of a mutable reference to `Vec<&u8>`
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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(x: &mut Vec<&'_ u8>, y: &'_ u8) { x.push(y); }
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LL + fn foo<'a>(x: &mut Vec<&'a u8>, y: &'a u8) { x.push(y); }
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error: aborting due to 1 previous error
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