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error[E0038]: the trait `Foo` is not dyn compatible
--> $DIR/dyn-compatibility-err-ret.rs:17:16
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LL | fn use_dyn(v: &dyn Foo) {
| ^^^^^^^ `Foo` 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/dyn-compatibility-err-ret.rs:8:8
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LL | trait Foo {
| --- this trait is not dyn compatible...
LL | fn test(&self) -> [u8; bar::<Self>()];
| ^^^^ ^^^^^^^^^^^^^^^^^^^ ...because method `test` references the `Self` type in its return type
| |
| ...because method `test` references the `Self` type in its `where` clause
= help: consider moving `test` to another trait
= help: only type `()` implements `Foo`; consider using it directly instead.
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0038`.
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