let owner_id = hir.body_owner(body_id);
let fn_decl = hir.fn_decl_by_hir_id(owner_id).unwrap();
- let poly_fn_sig = tcx.fn_sig(id);
+ let poly_fn_sig = tcx.fn_sig(id).subst_identity();
let fn_sig = tcx.liberate_late_bound_regions(id, poly_fn_sig);
let body = hir.body(body_id);