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error[E0038]: the trait `Trait` cannot be made into an object
--> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:32:25
|
LL | fn ptr(self: Ptr<Self>);
| --------- help: consider changing method `ptr`'s `self` parameter to be `&self`: `&Self`
...
LL | Ptr(Box::new(4)) as Ptr<dyn Trait>;
| ^^^^^^^^^^^^^^ `Trait` cannot be made into an object
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:25:18
|
LL | trait Trait {
| ----- this trait cannot be made into an object...
LL | fn ptr(self: Ptr<Self>);
| ^^^^^^^^^ ...because method `ptr`'s `self` parameter cannot be dispatched on
= help: only type `i32` implements the trait, consider using it directly instead
error[E0038]: the trait `Trait` cannot be made into an object
--> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:32:5
|
LL | fn ptr(self: Ptr<Self>);
| --------- help: consider changing method `ptr`'s `self` parameter to be `&self`: `&Self`
...
LL | Ptr(Box::new(4)) as Ptr<dyn Trait>;
| ^^^^^^^^^^^^^^^^ `Trait` cannot be made into an object
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:25:18
|
LL | trait Trait {
| ----- this trait cannot be made into an object...
LL | fn ptr(self: Ptr<Self>);
| ^^^^^^^^^ ...because method `ptr`'s `self` parameter cannot be dispatched on
= help: only type `i32` implements the trait, consider using it directly instead
= note: required for the cast from `Ptr<{integer}>` to `Ptr<dyn Trait>`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0038`.
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