let drop_trait = tcx.require_lang_item(LangItem::Drop, None);
let drop_fn = tcx.associated_item_def_ids(drop_trait)[0];
let ty = self.place_ty(self.place);
- let substs = tcx.mk_substs_trait(ty, &[]);
+ let substs = tcx.mk_substs_trait(ty, []);
let ref_ty =
tcx.mk_ref(tcx.lifetimes.re_erased, ty::TypeAndMut { ty, mutbl: hir::Mutability::Mut });