2 files changed, 10 insertions, 1 deletions
diff --git a/tests/ui/const-generics/bad-generic-in-copy-impl.rs b/tests/ui/const-generics/bad-generic-in-copy-impl.rs
index b5663464cf4..092a7af236b 100644
--- a/tests/ui/const-generics/bad-generic-in-copy-impl.rs
+++ b/tests/ui/const-generics/bad-generic-in-copy-impl.rs
@@ -2,6 +2,7 @@
 pub struct Foo {
     x: [u8; SIZE],
     //~^ ERROR mismatched types
+    //~| ERROR mismatched types
 }
 
 const SIZE: u32 = 1;
diff --git a/tests/ui/const-generics/bad-generic-in-copy-impl.stderr b/tests/ui/const-generics/bad-generic-in-copy-impl.stderr
index d60d8ec0e90..fbd546d42fb 100644
--- a/tests/ui/const-generics/bad-generic-in-copy-impl.stderr
+++ b/tests/ui/const-generics/bad-generic-in-copy-impl.stderr
@@ -4,6 +4,14 @@ error[E0308]: mismatched types
 LL |     x: [u8; SIZE],
    |             ^^^^ expected `usize`, found `u32`
 
-error: aborting due to 1 previous error
+error[E0308]: mismatched types
+  --> $DIR/bad-generic-in-copy-impl.rs:3:13
+   |
+LL |     x: [u8; SIZE],
+   |             ^^^^ expected `usize`, found `u32`
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0308`.