syntax_data: {"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let ty::Adt(adt_def, _) = ty.kind() else {
context_before:                 let res = self.typeck_results.qpath_res(qpath, pat.hir_id);
context_after:                     span_bug!(pat.span, "tuple struct pattern not applied to an ADT {:?}", ty);