| error[E0107]: missing generics for associated type `SuperTrait::SubType` |
| --> $DIR/issue-76535.rs:34:33 |
| | |
| LL | let sub: Box<dyn SuperTrait<SubType = SubStruct>> = Box::new(SuperStruct::new(0)); |
| | ^^^^^^^ expected 1 lifetime argument |
| | |
| note: associated type defined here, with 1 lifetime parameter: `'a` |
| --> $DIR/issue-76535.rs:4:10 |
| | |
| LL | type SubType<'a>: SubTrait where Self: 'a; |
| | ^^^^^^^ -- |
| help: add missing lifetime argument |
| | |
| LL | let sub: Box<dyn SuperTrait<SubType<'a> = SubStruct>> = Box::new(SuperStruct::new(0)); |
| | ++++ |
| |
| error[E0038]: the trait `SuperTrait` is not dyn compatible |
| --> $DIR/issue-76535.rs:34:22 |
| | |
| LL | let sub: Box<dyn SuperTrait<SubType = SubStruct>> = Box::new(SuperStruct::new(0)); |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `SuperTrait` 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/issue-76535.rs:4:10 |
| | |
| LL | pub trait SuperTrait { |
| | ---------- this trait is not dyn compatible... |
| LL | type SubType<'a>: SubTrait where Self: 'a; |
| | ^^^^^^^ ...because it contains the generic associated type `SubType` |
| = help: consider moving `SubType` to another trait |
| = help: only type `SuperStruct` implements `SuperTrait` within this crate; consider using it directly instead. |
| = note: `SuperTrait` may be implemented in other crates; if you want to support your users passing their own types here, you can't refer to a specific type |
| |
| error: aborting due to 2 previous errors |
| |
| Some errors have detailed explanations: E0038, E0107. |
| For more information about an error, try `rustc --explain E0038`. |
