{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"///"}]}
    /// Error E0429: `self` imports are only allowed within a `{ }` list.
    UndeclaredLabel { name: Symbol, suggestion: Option<LabelSuggestion> },
    SelfImportsOnlyAllowedWithin { root: bool, span_with_rename: Span },