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-rw-r--r--src/test/ui/issues/issue-37884.stderr22
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diff --git a/src/test/ui/issues/issue-37884.stderr b/src/test/ui/issues/issue-37884.stderr
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+++ b/src/test/ui/issues/issue-37884.stderr
@@ -0,0 +1,22 @@
+error[E0308]: method not compatible with trait
+ --> $DIR/issue-37884.rs:6:5
+ |
+LL | fn next(&'a mut self) -> Option<Self::Item>
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ lifetime mismatch
+ |
+ = note: expected fn pointer `fn(&mut RepeatMut<'a, T>) -> Option<_>`
+ found fn pointer `fn(&'a mut RepeatMut<'a, T>) -> Option<_>`
+note: the anonymous lifetime as defined here...
+ --> $DIR/issue-37884.rs:6:5
+ |
+LL | fn next(&'a mut self) -> Option<Self::Item>
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...does not necessarily outlive the lifetime `'a` as defined here
+ --> $DIR/issue-37884.rs:3:6
+ |
+LL | impl<'a, T: 'a> Iterator for RepeatMut<'a, T> {
+ | ^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.