rust/tests/ui/traits/trait-upcasting/migrate-lint-different-substs.stderr
2023-11-22 21:51:39 +00:00

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warning: this `Deref` implementation is covered by an implicit supertrait coercion
--> $DIR/migrate-lint-different-substs.rs:11:1
|
LL | impl<'a> Deref for dyn Foo + 'a {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `dyn Foo` implements `Deref<Target = dyn Bar<u32>>` which conflicts with supertrait `Bar<i32>`
LL |
LL | type Target = dyn Bar<u32> + 'a;
| -------------------------------- target type is a supertrait of `dyn Foo`
|
= help: consider removing this implementation or replacing it with a method instead
= note: `#[warn(deref_into_dyn_supertrait)]` on by default
warning: 1 warning emitted