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error[E0038]: the trait `A` is not dyn compatible
--> $DIR/wf-dyn-incompatible.rs:9:18
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LL | let _x: &dyn A;
| ^ `A` 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/wf-dyn-incompatible.rs:5:23
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LL | trait A {
| - this trait is not dyn compatible...
LL | fn foo(&self, _x: &Self);
| ^^^^^ ...because method `foo` references the `Self` type in this parameter
= help: consider moving `foo` to another trait
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0038`.
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