Make `deref_into_dyn_supertrait` lint the impl and not the usage

2 files changed, 14 insertions, 6 deletions

diff --git a/src/test/ui/traits/trait-upcasting/migrate-lint-deny.rs b/src/test/ui/traits/trait-upcasting/migrate-lint-deny.rs
index 5f5a2574bab..ae36115be7b 100644
--- a/src/test/ui/traits/trait-upcasting/migrate-lint-deny.rs
+++ b/src/test/ui/traits/trait-upcasting/migrate-lint-deny.rs
@@ -7,7 +7,11 @@ use core::ops::Deref;
 // issue 89190
 trait A {}
 trait B: A {}
+
 impl<'a> Deref for dyn 'a + B {
+    //~^ ERROR `(dyn B + 'a)` implements `Deref` with supertrait `A` as output
+    //~| WARN this was previously accepted by the compiler but is being phased out;
+
     type Target = dyn A;
     fn deref(&self) -> &Self::Target {
         todo!()
@@ -18,8 +22,6 @@ fn take_a(_: &dyn A) {}
 
 fn whoops(b: &dyn B) {
     take_a(b)
-    //~^ ERROR `dyn B` implements `Deref` with supertrait `A` as output
-    //~^^ WARN this was previously accepted by the compiler but is being phased out;
 }
 
 fn main() {}
diff --git a/src/test/ui/traits/trait-upcasting/migrate-lint-deny.stderr b/src/test/ui/traits/trait-upcasting/migrate-lint-deny.stderr
index 41381a3ffd1..03317d09eb6 100644
--- a/src/test/ui/traits/trait-upcasting/migrate-lint-deny.stderr
+++ b/src/test/ui/traits/trait-upcasting/migrate-lint-deny.stderr
@@ -1,8 +1,14 @@
-error: `dyn B` implements `Deref` with supertrait `A` as output
-  --> $DIR/migrate-lint-deny.rs:20:12
+error: `(dyn B + 'a)` implements `Deref` with supertrait `A` as output
+  --> $DIR/migrate-lint-deny.rs:11:1
    |
-LL |     take_a(b)
-   |            ^
+LL | / impl<'a> Deref for dyn 'a + B {
+LL | |
+LL | |
+LL | |
+...  |
+LL | |     }
+LL | | }
+   | |_^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #89460 <https://github.com/rust-lang/rust/issues/89460>