{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":".filter_map(|v|"}]}
        .filter_map(|v| v.ast().fields.iter().map(|f| f.span()).next())
        .iter()
        .map(|span| span_error(span, "enum variant cannot have fields (TryFromU32)"))