Auto merge of #3576 - matthiaskrgr:rustup, r=oli-obk

rustup #56992

Author: bors

clippy_lints/src/attrs.rs

@@ -337,7 +337,9 @@ fn check_clippy_lint_names(cx: &LateContext<'_, '_>, items: &[NestedMetaItem]) {
                                 &name_lower,
                                 Some(tool_name.as_str())
                             ) {
-                                CheckLintNameResult::NoLint => (),
+                                // FIXME: can we suggest similar lint names here?
+                                // https://github.com/rust-lang/rust/pull/56992
+                                CheckLintNameResult::NoLint(None) => (),
                                 _ => {
                                     db.span_suggestion(lint.span,
                                                        "lowercase the lint name",