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error[E0038]: the trait `Bar` cannot be made into an object
--> $DIR/issue-28576.rs:9:12
|
LL | / dyn Bar
LL | | <Assoc=()>
| |________________________^ `Bar` 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/issue-28576.rs:5:16
|
LL | pub trait Bar: Foo<Assoc=()> {
| --- ^^^^^^^^^^^^^
| | | |
| | | ...because it uses `Self` as a type parameter
| | ...because it uses `Self` as a type parameter
| this trait cannot be made into an object...
help: consider using an opaque type instead
|
LL | impl Bar
| ~~~~
error[E0277]: the size for values of type `Self` cannot be known at compilation time
--> $DIR/issue-28576.rs:5:16
|
LL | pub trait Bar: Foo<Assoc=()> {
| ^^^^^^^^^^^^^ doesn't have a size known at compile-time
|
note: required by an implicit `Sized` bound in `Foo`
--> $DIR/issue-28576.rs:1:15
|
LL | pub trait Foo<RHS=Self> {
| ^^^^^^^^ required by the implicit `Sized` requirement on this bound in `Foo`
help: consider further restricting `Self`
|
LL | pub trait Bar: Foo<Assoc=()> + Sized {
| +++++++
help: consider relaxing the implicit `Sized` restriction
|
LL | pub trait Foo<RHS=Self: ?Sized> {
| ++++++++
error[E0277]: the size for values of type `Self` cannot be known at compilation time
--> $DIR/issue-28576.rs:5:16
|
LL | pub trait Bar: Foo<Assoc=()> {
| ^^^^^^^^^^^^^ doesn't have a size known at compile-time
|
note: required by an implicit `Sized` bound in `Foo`
--> $DIR/issue-28576.rs:1:15
|
LL | pub trait Foo<RHS=Self> {
| ^^^^^^^^ required by the implicit `Sized` requirement on this bound in `Foo`
help: consider further restricting `Self`
|
LL | ) where Self: Sized;
| +++++++++++++++++
help: consider relaxing the implicit `Sized` restriction
|
LL | pub trait Foo<RHS=Self: ?Sized> {
| ++++++++
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0038, E0277.
For more information about an error, try `rustc --explain E0038`.
|
