{"ast_node_type":"variable","tokens":[{"end":78,"kind":"keyword","start":0,"text":"let"}]}
                    let is_target_supported = |reg_class: InlineAsmRegClass| {
                InlineAsmOperandRef::Out { reg, late, place } => {
                        for &(_, feature) in reg_class.supported_types(asm_arch, true) {