rust/tests/ui/traits/issue-38604.stderr

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error[E0038]: the trait `Foo` is not dyn compatible
--> $DIR/issue-38604.rs:14:13
|
LL | let _f: Box<dyn Foo> =
| ^^^^^^^^^^^^ `Foo` 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-38604.rs:2:22
|
LL | trait Foo where u32: Q<Self> {
| --- ^^^^^^^ ...because it uses `Self` as a type parameter
| |
| this trait is not dyn compatible...
= help: only type `()` implements `Foo`; consider using it directly instead.
error[E0038]: the trait `Foo` is not dyn compatible
--> $DIR/issue-38604.rs:15:9
|
LL | Box::new(());
| ^^^^^^^^^^^^ `Foo` 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-38604.rs:2:22
|
LL | trait Foo where u32: Q<Self> {
| --- ^^^^^^^ ...because it uses `Self` as a type parameter
| |
| this trait is not dyn compatible...
= help: only type `()` implements `Foo`; consider using it directly instead.
= note: required for the cast from `Box<()>` to `Box<dyn Foo>`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0038`.