diff --git a/tests/ui/pin_project/project_replace_unsized_fn_params.rs b/tests/ui/pin_project/project_replace_unsized_fn_params.rs
index 2fbdf42f..40b1d082 100644
--- a/tests/ui/pin_project/project_replace_unsized_fn_params.rs
+++ b/tests/ui/pin_project/project_replace_unsized_fn_params.rs
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
+#![allow(internal_features)]
 #![feature(unsized_fn_params)]
 
 use pin_project::pin_project;
diff --git a/tests/ui/pin_project/project_replace_unsized_fn_params.stderr b/tests/ui/pin_project/project_replace_unsized_fn_params.stderr
index 54531590..2ce74036 100644
--- a/tests/ui/pin_project/project_replace_unsized_fn_params.stderr
+++ b/tests/ui/pin_project/project_replace_unsized_fn_params.stderr
@@ -1,36 +1,36 @@
 error[E0277]: the size for values of type `T` cannot be known at compilation time
- --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:8:8
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:9:8
   |
-8 | struct Struct<T: ?Sized> {
+9 | struct Struct<T: ?Sized> {
   |        ^^^^^^^-^^^^^^^^^
   |        |      |
   |        |      this type parameter needs to be `Sized`
   |        doesn't have a size known at compile-time
   |
 note: required because it appears within the type `__StructProjectionOwned<T>`
- --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:8:8
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:9:8
   |
-8 | struct Struct<T: ?Sized> {
+9 | struct Struct<T: ?Sized> {
   |        ^^^^^^
   = note: the return type of a function must have a statically known size
 help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
-8 - struct Struct<T: ?Sized> {
-8 + struct Struct<T> {
+9 - struct Struct<T: ?Sized> {
+9 + struct Struct<T> {
   |
 
 error[E0277]: the size for values of type `T` cannot be known at compilation time
- --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:7:1
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:8:1
   |
-7 | #[pin_project(project_replace)] //~ ERROR E0277
+8 | #[pin_project(project_replace)] //~ ERROR E0277
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
-8 | struct Struct<T: ?Sized> {
+9 | struct Struct<T: ?Sized> {
   |               - this type parameter needs to be `Sized`
   |
 note: required because it appears within the type `Struct<T>`
- --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:8:8
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:9:8
   |
-8 | struct Struct<T: ?Sized> {
+9 | struct Struct<T: ?Sized> {
   |        ^^^^^^
 note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
  --> src/lib.rs
@@ -43,64 +43,64 @@ note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
-8   - struct Struct<T: ?Sized> {
-8   + struct Struct<T> {
+9   - struct Struct<T: ?Sized> {
+9   + struct Struct<T> {
     |
 
 error[E0277]: the size for values of type `T` cannot be known at compilation time
- --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:9:5
-  |
-7 | #[pin_project(project_replace)] //~ ERROR E0277
-  | ------------------------------- required by a bound introduced by this call
-8 | struct Struct<T: ?Sized> {
-  |               - this type parameter needs to be `Sized`
-9 |     f: T,
-  |     ^ doesn't have a size known at compile-time
-  |
+  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:10:5
+   |
+8  | #[pin_project(project_replace)] //~ ERROR E0277
+   | ------------------------------- required by a bound introduced by this call
+9  | struct Struct<T: ?Sized> {
+   |               - this type parameter needs to be `Sized`
+10 |     f: T,
+   |     ^ doesn't have a size known at compile-time
+   |
 note: required by an implicit `Sized` bound in `std::ptr::read`
- --> $RUST/core/src/ptr/mod.rs
-  |
-  | pub const unsafe fn read<T>(src: *const T) -> T {
-  |                          ^ required by the implicit `Sized` requirement on this type parameter in `read`
+  --> $RUST/core/src/ptr/mod.rs
+   |
+   | pub const unsafe fn read<T>(src: *const T) -> T {
+   |                          ^ required by the implicit `Sized` requirement on this type parameter in `read`
 help: consider removing the `?Sized` bound to make the type parameter `Sized`
-  |
-8    - struct Struct<T: ?Sized> {
-8    + struct Struct<T> {
+   |
+9    - struct Struct<T: ?Sized> {
+9    + struct Struct<T> {
      |
 
 error[E0277]: the size for values of type `T` cannot be known at compilation time
-  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:13:8
+  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:14:8
    |
-13 | struct TupleStruct<T: ?Sized>(T);
+14 | struct TupleStruct<T: ?Sized>(T);
    |        ^^^^^^^^^^^^-^^^^^^^^^
    |        |           |
    |        |           this type parameter needs to be `Sized`
    |        doesn't have a size known at compile-time
    |
 note: required because it appears within the type `__TupleStructProjectionOwned<T>`
-  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:13:8
+  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:14:8
    |
-13 | struct TupleStruct<T: ?Sized>(T);
+14 | struct TupleStruct<T: ?Sized>(T);
    |        ^^^^^^^^^^^
    = note: the return type of a function must have a statically known size
 help: consider removing the `?Sized` bound to make the type parameter `Sized`
    |
-13 - struct TupleStruct<T: ?Sized>(T);
-13 + struct TupleStruct<T>(T);
+14 - struct TupleStruct<T: ?Sized>(T);
+14 + struct TupleStruct<T>(T);
    |
 
 error[E0277]: the size for values of type `T` cannot be known at compilation time
-  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:12:1
+  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:13:1
    |
-12 | #[pin_project(project_replace)] //~ ERROR E0277
+13 | #[pin_project(project_replace)] //~ ERROR E0277
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
-13 | struct TupleStruct<T: ?Sized>(T);
+14 | struct TupleStruct<T: ?Sized>(T);
    |                    - this type parameter needs to be `Sized`
    |
 note: required because it appears within the type `TupleStruct<T>`
-  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:13:8
+  --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:14:8
    |
-13 | struct TupleStruct<T: ?Sized>(T);
+14 | struct TupleStruct<T: ?Sized>(T);
    |        ^^^^^^^^^^^
 note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
   --> src/lib.rs
@@ -113,6 +113,6 @@ note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
    = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider removing the `?Sized` bound to make the type parameter `Sized`
    |
-13  - struct TupleStruct<T: ?Sized>(T);
-13  + struct TupleStruct<T>(T);
+14  - struct TupleStruct<T: ?Sized>(T);
+14  + struct TupleStruct<T>(T);
     |