syntax_data: {"ast_node_type":"variable","tokens":[{"end":46,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let typing_env = body.typing_env(tcx);
context_before:     fn run_lint(&self, tcx: TyCtxt<'tcx>, body: &Body<'tcx>) {
context_after:         let source_info = SourceInfo::outermost(body.span);