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50 lines
2.2 KiB
Plaintext
50 lines
2.2 KiB
Plaintext
error[E0038]: the trait `Foo` is not dyn compatible
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--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:12:13
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LL | fn method(self: &W) {}
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| -- help: consider changing method `method`'s `self` parameter to be `&self`: `&Self`
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...
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LL | fn test(x: &dyn Foo) {
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| ^^^^^^^ `Foo` is not dyn compatible
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note: for a trait to be dyn compatible it needs to allow building a vtable
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for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
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--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:8:21
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LL | trait Foo: Deref<Target = W> {
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| --- this trait is not dyn compatible...
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LL | fn method(self: &W) {}
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| ^^ ...because method `method`'s `self` parameter cannot be dispatched on
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error[E0307]: invalid `self` parameter type: `&W`
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--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:8:21
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LL | fn method(self: &W) {}
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| ^^
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= note: type of `self` must be `Self` or a type that dereferences to it
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= help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
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error[E0038]: the trait `Foo` is not dyn compatible
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--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:14:5
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LL | fn method(self: &W) {}
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| -- help: consider changing method `method`'s `self` parameter to be `&self`: `&Self`
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...
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LL | x.method();
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| ^^^^^^^^^^ `Foo` is not dyn compatible
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note: for a trait to be dyn compatible it needs to allow building a vtable
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for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
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--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:8:21
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LL | trait Foo: Deref<Target = W> {
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| --- this trait is not dyn compatible...
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LL | fn method(self: &W) {}
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| ^^ ...because method `method`'s `self` parameter cannot be dispatched on
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0038, E0307.
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For more information about an error, try `rustc --explain E0038`.
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