Don't fire refinement lint if there are errors

compiler/rustc_hir_analysis/src/check/compare_impl_item/refine.rs

@@ -64,6 +64,10 @@ pub(super) fn check_refining_return_position_impl_trait_in_trait<'tcx>(
         return;
     };
 
+    if hidden_tys.items().any(|(_, &ty)| ty.skip_binder().references_error()) {
+        return;
+    }
+
     let mut collector = ImplTraitInTraitCollector { tcx, types: FxIndexSet::default() };
     trait_m_sig.visit_with(&mut collector);
 

tests/ui/impl-trait/precise-capturing/rpitit-captures-more-method-lifetimes.rs

@@ -11,7 +11,6 @@ pub trait Foo {
 impl Foo for () {
     fn bar<'im: 'im>(&'im mut self) -> impl Sized + use<'im> {}
     //~^ ERROR return type captures more lifetimes than trait definition
-    //~| WARN impl trait in impl method signature does not match trait method signature
 }
 
 fn main() {}

tests/ui/impl-trait/precise-capturing/rpitit-captures-more-method-lifetimes.stderr

@@ -13,22 +13,5 @@ LL |     fn bar<'tr: 'tr>(&'tr mut self) -> impl Sized + use<Self>;
    |                                        ^^^^^^^^^^^^^^^^^^^^^^
    = note: hidden type inferred to be `impl Sized`
 
-warning: impl trait in impl method signature does not match trait method signature
-  --> $DIR/rpitit-captures-more-method-lifetimes.rs:12:40
-   |
-LL |     fn bar<'tr: 'tr>(&'tr mut self) -> impl Sized + use<Self>;
-   |                                        ---------------------- return type from trait method defined here
-...
-LL |     fn bar<'im: 'im>(&'im mut self) -> impl Sized + use<'im> {}
-   |                                        ^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
-   = note: we are soliciting feedback, see issue #121718 <https://github.com/rust-lang/rust/issues/121718> for more information
-   = note: `#[warn(refining_impl_trait_reachable)]` on by default
-help: replace the return type so that it matches the trait
-   |
-LL |     fn bar<'im: 'im>(&'im mut self) -> impl Sized {}
-   |                                        ~~~~~~~~~~
-
-error: aborting due to 1 previous error; 1 warning emitted
+error: aborting due to 1 previous error
 

tests/ui/impl-trait/precise-capturing/rpitit-impl-captures-too-much.rs

@@ -9,7 +9,6 @@ trait Trait {
 impl Trait for () {
     fn hello(self_: Invariant<'_>) -> impl Sized + use<'_> {}
     //~^ ERROR return type captures more lifetimes than trait definition
-    //~| WARNING impl trait in impl method signature does not match trait method signature
 }
 
 fn main() {}

tests/ui/impl-trait/precise-capturing/rpitit-impl-captures-too-much.stderr

@@ -13,22 +13,5 @@ LL |     fn hello(self_: Invariant<'_>) -> impl Sized + use<Self>;
    |                                       ^^^^^^^^^^^^^^^^^^^^^^
    = note: hidden type inferred to be `impl Sized`
 
-warning: impl trait in impl method signature does not match trait method signature
-  --> $DIR/rpitit-impl-captures-too-much.rs:10:39
-   |
-LL |     fn hello(self_: Invariant<'_>) -> impl Sized + use<Self>;
-   |                                       ---------------------- return type from trait method defined here
-...
-LL |     fn hello(self_: Invariant<'_>) -> impl Sized + use<'_> {}
-   |                                       ^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
-   = note: we are soliciting feedback, see issue #121718 <https://github.com/rust-lang/rust/issues/121718> for more information
-   = note: `#[warn(refining_impl_trait_internal)]` on by default
-help: replace the return type so that it matches the trait
-   |
-LL |     fn hello(self_: Invariant<'_>) -> impl Sized {}
-   |                                       ~~~~~~~~~~
-
-error: aborting due to 1 previous error; 1 warning emitted
+error: aborting due to 1 previous error