15 lines
637 B
Plaintext
15 lines
637 B
Plaintext
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error[E0308]: mismatched types
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--> $DIR/higher-ranked-upcasting-ok.rs:17:5
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LL | fn ok(x: &dyn for<'a, 'b> Subtrait<'a, 'b>) -> &dyn for<'a> Supertrait<'a, 'a> {
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| ------------------------------- expected `&dyn for<'a> Supertrait<'a, 'a>` because of return type
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LL | x
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| ^ expected trait `Supertrait`, found trait `Subtrait`
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= note: expected reference `&dyn for<'a> Supertrait<'a, 'a>`
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found reference `&dyn for<'a, 'b> Subtrait<'a, 'b>`
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0308`.
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