{"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
        let _span = enter_trace_span!(M, layouting::layout_of, ty = ?ty.kind());
    pub fn layout_of(&self, ty: Ty<'tcx>) -> <Self as LayoutOfHelpers<'tcx>>::LayoutOfResult {
        LayoutOf::layout_of(self, ty)