mirror of https://github.com/rust-lang/rust
20 lines
744 B
Plaintext
20 lines
744 B
Plaintext
error[E0700]: hidden type for `impl Trait<'y>` captures lifetime that does not appear in bounds
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--> $DIR/region-escape-via-bound.rs:17:5
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LL | fn foo<'x, 'y>(x: Cell<&'x u32>) -> impl Trait<'y>
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| -- -------------- opaque type defined here
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| |
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| hidden type `Cell<&'x u32>` captures the lifetime `'x` as defined here
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...
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LL | x
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| ^
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help: to declare that `impl Trait<'y>` captures `'x`, you can add an explicit `'x` lifetime bound
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LL | fn foo<'x, 'y>(x: Cell<&'x u32>) -> impl Trait<'y> + 'x
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| ++++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0700`.
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