syntax_data: {"ast_node_type":"import","tokens":[{"end":47,"kind":"keyword","start":0,"text":"use"}]}
source_snippet:         use rustc_middle::ty::layout::LayoutOf;
context_before:     ) -> Result<Layout<'tcx>, &'tcx LayoutError<'tcx>> {
context_after:         let ty = cx.tcx().erase_regions(ty);