{"ast_node_type":"other","tokens":[{"end":129,"kind":"keyword","start":0,"text":"[sym::rustc_must_implement_one_of,"}]}
                        [sym::rustc_must_implement_one_of, ..] => self.check_must_be_applied_to_trait(attr.span(), span, target),
                        | [sym::rustc_then_this_would_need, ..] => self.check_rustc_dirty_clean(attr),
                        [sym::collapse_debuginfo, ..] => self.check_collapse_debuginfo(attr, span, target),