diff --git a/tests/test.rs b/tests/test.rs
index 63a1a25..276d591 100644
--- a/tests/test.rs
+++ b/tests/test.rs
@@ -3,9 +3,4 @@ fn ui_test() {
     let t = trybuild::TestCases::new();
     t.pass("tests/ui/pass_*.rs");
     t.compile_fail("tests/ui/fail*.rs");
-    #[cfg(feature = "unstable_delegate_to")]
-    {
-        t.pass("tests/ui/delegate_to_pass_*.rs");
-        t.compile_fail("tests/ui/delegate_to_fail*.rs");
-    }
 }
diff --git a/tests/ui/delegate_to_fail_delegate_to_can_appear_at_most_once.rs b/tests/ui.old/delegate_to_fail_delegate_to_can_appear_at_most_once.rs
similarity index 100%
rename from tests/ui/delegate_to_fail_delegate_to_can_appear_at_most_once.rs
rename to tests/ui.old/delegate_to_fail_delegate_to_can_appear_at_most_once.rs
diff --git a/tests/ui/delegate_to_fail_delegate_to_can_appear_at_most_once.stderr b/tests/ui.old/delegate_to_fail_delegate_to_can_appear_at_most_once.stderr
similarity index 100%
rename from tests/ui/delegate_to_fail_delegate_to_can_appear_at_most_once.stderr
rename to tests/ui.old/delegate_to_fail_delegate_to_can_appear_at_most_once.stderr
diff --git a/tests/ui/delegate_to_pass_enum_delegate_to.rs b/tests/ui.old/delegate_to_pass_enum_delegate_to.rs
similarity index 100%
rename from tests/ui/delegate_to_pass_enum_delegate_to.rs
rename to tests/ui.old/delegate_to_pass_enum_delegate_to.rs
diff --git a/tests/ui/delegate_to_pass_real_world_example.rs b/tests/ui.old/delegate_to_pass_real_world_example.rs
similarity index 100%
rename from tests/ui/delegate_to_pass_real_world_example.rs
rename to tests/ui.old/delegate_to_pass_real_world_example.rs
diff --git a/tests/ui/fail_fields_of_enum_must_be_a_field.rs b/tests/ui.old/fail_fields_of_enum_must_be_a_field.rs
similarity index 100%
rename from tests/ui/fail_fields_of_enum_must_be_a_field.rs
rename to tests/ui.old/fail_fields_of_enum_must_be_a_field.rs
diff --git a/tests/ui/fail_fields_of_enum_must_be_a_field.stderr b/tests/ui.old/fail_fields_of_enum_must_be_a_field.stderr
similarity index 100%
rename from tests/ui/fail_fields_of_enum_must_be_a_field.stderr
rename to tests/ui.old/fail_fields_of_enum_must_be_a_field.stderr
diff --git a/tests/ui/fail_num_of_generic_parameters_differ.rs b/tests/ui.old/fail_num_of_generic_parameters_differ.rs
similarity index 100%
rename from tests/ui/fail_num_of_generic_parameters_differ.rs
rename to tests/ui.old/fail_num_of_generic_parameters_differ.rs
diff --git a/tests/ui/fail_num_of_generic_parameters_differ.stderr b/tests/ui.old/fail_num_of_generic_parameters_differ.stderr
similarity index 100%
rename from tests/ui/fail_num_of_generic_parameters_differ.stderr
rename to tests/ui.old/fail_num_of_generic_parameters_differ.stderr
diff --git a/tests/ui/fail_parameter_cant_substituted_to_argument.rs b/tests/ui.old/fail_parameter_cant_substituted_to_argument.rs
similarity index 100%
rename from tests/ui/fail_parameter_cant_substituted_to_argument.rs
rename to tests/ui.old/fail_parameter_cant_substituted_to_argument.rs
diff --git a/tests/ui/fail_parameter_cant_substituted_to_argument.stderr b/tests/ui.old/fail_parameter_cant_substituted_to_argument.stderr
similarity index 100%
rename from tests/ui/fail_parameter_cant_substituted_to_argument.stderr
rename to tests/ui.old/fail_parameter_cant_substituted_to_argument.stderr
diff --git a/tests/ui/fail_register_conflicted.rs b/tests/ui.old/fail_register_conflicted.rs
similarity index 100%
rename from tests/ui/fail_register_conflicted.rs
rename to tests/ui.old/fail_register_conflicted.rs
diff --git a/tests/ui/fail_register_conflicted.stderr b/tests/ui.old/fail_register_conflicted.stderr
similarity index 100%
rename from tests/ui/fail_register_conflicted.stderr
rename to tests/ui.old/fail_register_conflicted.stderr
diff --git a/tests/ui/fail_register_missing.rs b/tests/ui.old/fail_register_missing.rs
similarity index 100%
rename from tests/ui/fail_register_missing.rs
rename to tests/ui.old/fail_register_missing.rs
diff --git a/tests/ui/fail_register_missing.stderr b/tests/ui.old/fail_register_missing.stderr
similarity index 100%
rename from tests/ui/fail_register_missing.stderr
rename to tests/ui.old/fail_register_missing.stderr
diff --git a/tests/ui/fail_register_reject_path_with_generics.rs b/tests/ui.old/fail_register_reject_path_with_generics.rs
similarity index 100%
rename from tests/ui/fail_register_reject_path_with_generics.rs
rename to tests/ui.old/fail_register_reject_path_with_generics.rs
diff --git a/tests/ui/fail_register_reject_path_with_generics.stderr b/tests/ui.old/fail_register_reject_path_with_generics.stderr
similarity index 100%
rename from tests/ui/fail_register_reject_path_with_generics.stderr
rename to tests/ui.old/fail_register_reject_path_with_generics.stderr
diff --git a/tests/ui/pass_enum.rs b/tests/ui.old/pass_enum.rs
similarity index 100%
rename from tests/ui/pass_enum.rs
rename to tests/ui.old/pass_enum.rs
diff --git a/tests/ui/pass_enum_consume_receiver.rs b/tests/ui.old/pass_enum_consume_receiver.rs
similarity index 100%
rename from tests/ui/pass_enum_consume_receiver.rs
rename to tests/ui.old/pass_enum_consume_receiver.rs
diff --git a/tests/ui/pass_enum_ref_mut_receiver.rs b/tests/ui.old/pass_enum_ref_mut_receiver.rs
similarity index 100%
rename from tests/ui/pass_enum_ref_mut_receiver.rs
rename to tests/ui.old/pass_enum_ref_mut_receiver.rs
diff --git a/tests/ui/pass_external_trait.rs b/tests/ui.old/pass_external_trait.rs
similarity index 100%
rename from tests/ui/pass_external_trait.rs
rename to tests/ui.old/pass_external_trait.rs
diff --git a/tests/ui/pass_generics_const.rs b/tests/ui.old/pass_generics_const.rs
similarity index 100%
rename from tests/ui/pass_generics_const.rs
rename to tests/ui.old/pass_generics_const.rs
diff --git a/tests/ui/pass_generics_specialize_complex.rs b/tests/ui.old/pass_generics_specialize_complex.rs
similarity index 100%
rename from tests/ui/pass_generics_specialize_complex.rs
rename to tests/ui.old/pass_generics_specialize_complex.rs
diff --git a/tests/ui/pass_method_with_args.rs b/tests/ui.old/pass_method_with_args.rs
similarity index 100%
rename from tests/ui/pass_method_with_args.rs
rename to tests/ui.old/pass_method_with_args.rs
diff --git a/tests/ui/pass_multiple_derive.rs b/tests/ui.old/pass_multiple_derive.rs
similarity index 100%
rename from tests/ui/pass_multiple_derive.rs
rename to tests/ui.old/pass_multiple_derive.rs
diff --git a/tests/ui/pass_real_world_example.rs b/tests/ui.old/pass_real_world_example.rs
similarity index 100%
rename from tests/ui/pass_real_world_example.rs
rename to tests/ui.old/pass_real_world_example.rs
diff --git a/tests/ui/pass_super_trait.rs b/tests/ui.old/pass_super_trait.rs
similarity index 100%
rename from tests/ui/pass_super_trait.rs
rename to tests/ui.old/pass_super_trait.rs