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error[E0277]: the size for values of type `Self` cannot be known at compilation time
--> $DIR/supertrait-mentions-Self.rs:8:13
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LL | trait Baz : Bar<Self> {
| ^^^^^^^^^ doesn't have a size known at compile-time
|
note: required by an implicit `Sized` bound in `Bar`
--> $DIR/supertrait-mentions-Self.rs:4:11
|
LL | trait Bar<T> {
| ^ required by the implicit `Sized` requirement on this type parameter in `Bar`
help: consider further restricting `Self`
|
LL | trait Baz : Bar<Self> + Sized {
| +++++++
help: consider relaxing the implicit `Sized` restriction
|
LL | trait Bar<T: ?Sized> {
| ++++++++
error[E0038]: the trait `Baz` is not dyn compatible
--> $DIR/supertrait-mentions-Self.rs:16:35
|
LL | fn make_baz<T:Baz>(t: &T) -> &dyn Baz {
| ^^^ `Baz` is not dyn compatible
|
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/supertrait-mentions-Self.rs:8:13
|
LL | trait Baz : Bar<Self> {
| --- ^^^^^^^^^ ...because it uses `Self` as a type parameter
| |
| this trait is not dyn compatible...
help: consider using an opaque type instead
|
LL - fn make_baz<T:Baz>(t: &T) -> &dyn Baz {
LL + fn make_baz<T:Baz>(t: &T) -> &impl Baz {
|
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0038, E0277.
For more information about an error, try `rustc --explain E0038`.
|
