{"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"span:"}]}
        span: impl_.self_ty.span,
    Err(tcx.dcx().emit_err(errors::DropImplOnWrongItem {
        trait_: tcx.item_name(checker.impl_header.trait_ref.skip_binder().def_id),