Change back to MaybeIncorrect

Author: scottgerring

clippy_lints/src/index_refutable_slice.rs

@@ -171,7 +171,7 @@ fn lint_slice(cx: &LateContext<'_>, slice: &SliceLintInformation) {
                 diag.multipart_suggestion(
                     "replace the binding and indexed access with a slice pattern",
                     suggestions,
-                    Applicability::MachineApplicable,
+                    Applicability::MaybeIncorrect,
                 );
             },
         );