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error[E0038]: the trait alias `SelfInput` is not dyn compatible
--> $DIR/self-in-generics.rs:8:19
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LL | pub fn f(_f: &dyn SelfInput) {}
| ^^^^^^^^^ `SelfInput` is not dyn compatible
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note: for a trait to be dyn compatible it needs to allow building a vtable
for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
--> $DIR/self-in-generics.rs:6:23
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LL | pub trait SelfInput = Fn(&mut Self);
| --------- ^^^^^^^^^^^^^
| | |
| | ...because it uses `Self` as a type parameter
| | ...because it uses `Self` as a type parameter
| this trait is not dyn compatible...
help: consider using an opaque type instead
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LL - pub fn f(_f: &dyn SelfInput) {}
LL + pub fn f(_f: &impl SelfInput) {}
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error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0038`.
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