{"ast_node_type":"function","tokens":[{"end":62,"kind":"keyword","start":0,"text":"fn"}]}
    fn run_lint(&self, tcx: TyCtxt<'tcx>, body: &Body<'tcx>) {
impl<'tcx> crate::MirLint<'tcx> for FunctionItemReferences {
        let mut checker = FunctionItemRefChecker { tcx, body };