{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
    let attrs = thin_vec![cx.attr_word(sym::automatically_derived, span),];
    // FIXME(dingxiangfei2009): Investigate the set of attributes on target struct to be propagated to impls
    // # Validity assertion which will be checked later in `rustc_hir_analysis::coherence::builtins`.