syntax_data: {"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"write!(f,"}]}
source_snippet:         write!(f, "UpvarId({:?};`{}`;{:?})", self.var_path.hir_id, name, self.closure_expr_id)
context_before:         let name = ty::tls::with(|tcx| tcx.hir_name(self.var_path.hir_id));
context_after:     }