syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"typeck_results:"}]}
source_snippet:     typeck_results: &'tcx ty::TypeckResults<'tcx>,
context_before:     region_scope_tree: &'tcx region::ScopeTree,
context_after:     rvalue_scopes: &'tcx RvalueScopes,