review comments

src/librustc_typeck/check/_match.rs

@@ -223,9 +223,6 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                                         .span_to_snippet(pat.span)
                                     {
                                         err.help(&format!("did you mean `{}: &{}`?",
-                                                          snippet,
-                                                          expected));
-                                        err.help(&format!("did you mean `{}: {}`?",
                                                           &snippet[1..],
                                                           expected));
                                     }

src/test/ui/mismatched_types/issue-38371.stderr

@@ -6,8 +6,7 @@ error[E0308]: mismatched types
    |
    = note: expected type `Foo`
    = note:    found type `&_`
-   = help: did you mean `&foo: &Foo`?
-   = help: did you mean `foo: Foo`?
+   = help: did you mean `foo: &Foo`?
 
 error: aborting due to previous error