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-rw-r--r--tests/ui/copy_iterator.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/ui/copy_iterator.rs b/tests/ui/copy_iterator.rs
index ae67ebded43..c0e5fc3e446 100644
--- a/tests/ui/copy_iterator.rs
+++ b/tests/ui/copy_iterator.rs
@@ -4,6 +4,8 @@
 struct Countdown(u8);
 
 impl Iterator for Countdown {
+    //~^ ERROR: you are implementing `Iterator` on a `Copy` type
+    //~| NOTE: consider implementing `IntoIterator` instead
     type Item = u8;
 
     fn next(&mut self) -> Option<u8> {