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error[E0308]: mismatched types
--> $DIR/higher-ranked-upcasting-ub.rs:22:5
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LL | x
| ^ one type is more general than the other
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= note: expected existential trait ref `for<'a, 'b> Supertrait<'a, 'b>`
found existential trait ref `for<'a> Supertrait<'a, 'a>`
error[E0308]: mismatched types
--> $DIR/higher-ranked-upcasting-ub.rs:22:5
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LL | x
| ^ one type is more general than the other
|
= note: expected existential trait ref `for<'a, 'b> Supertrait<'a, 'b>`
found existential trait ref `for<'a> Supertrait<'a, 'a>`
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0308`.
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