syntax_data: {"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let ty = self.typeck_results.expr_ty(expr);
context_before:             hir::ExprKind::Repeat(v, _) => {
context_after:                 let ty::Array(_, count) = ty.kind() else {