syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"assert!(!self_ty.has_escaping_bound_vars());"}]}
source_snippet:     assert!(!self_ty.has_escaping_bound_vars());
context_before: ) -> ty::Binder<'tcx, (ty::TraitRef<'tcx>, Ty<'tcx>)> {
context_after:     let arguments_tuple = match tuple_arguments {