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error[E0308]: mismatched types
--> $DIR/invalid-sugg-for-derive-macro-issue-136343.rs:6:10
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LL | #[derive(Sample)]
| ^^^^^^
| |
| expected type parameter `U`, found type parameter `T`
| expected `U` because of return type
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= note: expected type parameter `U`
found type parameter `T`
= 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 `U` which can be different from `T`
= note: this error originates in the derive macro `Sample` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0308`.
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