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diff --git a/tests/ui/higher-rank-trait-bounds/hang-on-deeply-nested-dyn.stderr b/tests/ui/higher-rank-trait-bounds/hang-on-deeply-nested-dyn.stderr
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index 000000000..71e196c32
--- /dev/null
+++ b/tests/ui/higher-rank-trait-bounds/hang-on-deeply-nested-dyn.stderr
@@ -0,0 +1,22 @@
+error[E0308]: mismatched types
+ --> $DIR/hang-on-deeply-nested-dyn.rs:12:5
+ |
+LL | ) -> &dyn Fn(
+ | ______-
+LL | | &dyn Fn(
+LL | | &dyn Fn(
+LL | | &dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(u32))))))))),
+LL | | ),
+LL | | ),
+LL | | ) {
+ | |_- expected `&dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn Fn(u32) + 'a)) + 'a)) + 'a)) + 'a)) + 'a)) + 'a)) + 'a)) + 'a)) + 'a)) + 'a)) + 'a))` because of return type
+LL | f
+ | ^ expected reference, found `u32`
+ |
+ = note: expected reference `&dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a (dyn for<'a> Fn(&'a ...) + 'a)) + 'a)) + 'a))`
+ the full type name has been written to '$TEST_BUILD_DIR/higher-rank-trait-bounds/hang-on-deeply-nested-dyn/hang-on-deeply-nested-dyn.long-type-hash.txt'
+ found reference `&dyn Fn(u32)`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.