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error[E0308]: mismatched types
--> $DIR/type-parameter-names.rs:7:5
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LL | fn foo<Foo, Bar>(x: Foo) -> Bar {
| --- --- --- expected `Bar` because of return type
| | |
| | expected type parameter
| found type parameter
LL | x
| ^ expected type parameter `Bar`, found type parameter `Foo`
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= note: expected type parameter `Bar`
found type parameter `Foo`
= note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
= note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
= note: the caller chooses a type for `Bar` which can be different from `Foo`
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0308`.
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