-warning: the feature `generic_associated_types` is incomplete and may not be safe to use and/or cause compiler crashes
- --> $DIR/issue-76535.rs:1:12
- |
-LL | #![feature(generic_associated_types)]
- | ^^^^^^^^^^^^^^^^^^^^^^^^
- |
- = note: `#[warn(incomplete_features)]` on by default
- = note: see issue #44265 <https://github.com/rust-lang/rust/issues/44265> for more information
-
error[E0107]: missing generics for associated type `SuperTrait::SubType`
- --> $DIR/issue-76535.rs:37:33
+ --> $DIR/issue-76535.rs:36:33
|
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:7:10
+ --> $DIR/issue-76535.rs:6:10
|
LL | type SubType<'a>: SubTrait;
| ^^^^^^^ --
| ^^^^^^^^^^^
error[E0038]: the trait `SuperTrait` cannot be made into an object
- --> $DIR/issue-76535.rs:37:14
+ --> $DIR/issue-76535.rs:36:14
|
LL | let sub: Box<dyn SuperTrait<SubType = SubStruct>> = Box::new(SuperStruct::new(0));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `SuperTrait` cannot be made into an object
|
= help: consider moving `SubType` to another trait
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-76535.rs:7:10
+ --> $DIR/issue-76535.rs:6:10
|
LL | pub trait SuperTrait {
| ---------- this trait cannot be made into an object...
| ^^^^^^^ ...because it contains the generic associated type `SubType`
error[E0038]: the trait `SuperTrait` cannot be made into an object
- --> $DIR/issue-76535.rs:37:57
+ --> $DIR/issue-76535.rs:36:57
|
LL | let sub: Box<dyn SuperTrait<SubType = SubStruct>> = Box::new(SuperStruct::new(0));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `SuperTrait` cannot be made into an object
|
= help: consider moving `SubType` to another trait
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-76535.rs:7:10
+ --> $DIR/issue-76535.rs:6:10
|
LL | pub trait SuperTrait {
| ---------- this trait cannot be made into an object...
= note: required because of the requirements on the impl of `CoerceUnsized<Box<dyn SuperTrait<SubType = SubStruct<'_>>>>` for `Box<SuperStruct>`
= note: required by cast to type `Box<dyn SuperTrait<SubType = SubStruct<'_>>>`
-error: aborting due to 3 previous errors; 1 warning emitted
+error: aborting due to 3 previous errors
Some errors have detailed explanations: E0038, E0107.
For more information about an error, try `rustc --explain E0038`.