syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"tcx.lifetimes.re_erased,"}]}
source_snippet:             tcx.lifetimes.re_erased,
context_before:             ty::ClosureKind::FnOnce,
context_after:             parent_closure_args.tupled_upvars_ty(),