tests: Update ui test output to nightly-2026-01-22

Author: taiki-e

tests/ui/pin_project/project_replace_unsized.stderr

@@ -77,7 +77,7 @@ note: required because it appears within the type `Struct<T>`
   |
 6 | struct Struct<T: ?Sized> {
   |        ^^^^^^
-note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+note: required by an implicit `Sized` bound in `_::_pin_project::__private::UnsafeOverwriteGuard`
  --> src/lib.rs
   |
   |     pub struct UnsafeOverwriteGuard<T> {
@@ -147,7 +147,7 @@ note: required because it appears within the type `TupleStruct<T>`
    |
 11 | struct TupleStruct<T: ?Sized>(T);
    |        ^^^^^^^^^^^
-note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+note: required by an implicit `Sized` bound in `_::_pin_project::__private::UnsafeOverwriteGuard`
   --> src/lib.rs
    |
    |     pub struct UnsafeOverwriteGuard<T> {

tests/ui/pin_project/project_replace_unsized_fn_params.stderr

@@ -53,7 +53,7 @@ note: required because it appears within the type `Struct<T>`
   |
 9 | struct Struct<T: ?Sized> {
   |        ^^^^^^
-note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+note: required by an implicit `Sized` bound in `_::_pin_project::__private::UnsafeOverwriteGuard`
  --> src/lib.rs
   |
   |     pub struct UnsafeOverwriteGuard<T> {
@@ -99,7 +99,7 @@ note: required because it appears within the type `TupleStruct<T>`
    |
 14 | struct TupleStruct<T: ?Sized>(T);
    |        ^^^^^^^^^^^
-note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+note: required by an implicit `Sized` bound in `_::_pin_project::__private::UnsafeOverwriteGuard`
   --> src/lib.rs
    |
    |     pub struct UnsafeOverwriteGuard<T> {

tests/ui/pinned_drop/conditional-drop-impl.stderr

@@ -18,7 +18,7 @@ error[E0277]: `T` cannot be unpinned
    |
    = note: consider using the `pin!` macro
            consider using `Box::pin` if you need to access the pinned value outside of the current scope
-note: required for `PinnedDropImpl<T>` to implement `PinnedDrop`
+note: required for `PinnedDropImpl<T>` to implement `_pin_project::__private::PinnedDrop`
   --> tests/ui/pinned_drop/conditional-drop-impl.rs:25:16
    |
 24 | #[pinned_drop]

tests/ui/pinned_drop/forget-pinned-drop-impl.stderr

@@ -1,10 +1,10 @@
-error[E0277]: the trait bound `Struct: PinnedDrop` is not satisfied
+error[E0277]: the trait bound `Struct: _pin_project::__private::PinnedDrop` is not satisfied
  --> tests/ui/pinned_drop/forget-pinned-drop-impl.rs:5:15
   |
 5 | #[pin_project(PinnedDrop)] //~ ERROR E0277
   |               ^^^^^^^^^^ unsatisfied trait bound
   |
-help: the trait `PinnedDrop` is not implemented for `Struct`
+help: the trait `_pin_project::__private::PinnedDrop` is not implemented for `Struct`
  --> tests/ui/pinned_drop/forget-pinned-drop-impl.rs:6:1
   |
 6 | struct Struct {

tests/ui/pinned_drop/pinned-drop-no-attr-arg.stderr

@@ -1,4 +1,4 @@
-error[E0119]: conflicting implementations of trait `PinnedDrop` for type `S`
+error[E0119]: conflicting implementations of trait `_pin_project::__private::PinnedDrop` for type `S`
   --> tests/ui/pinned_drop/pinned-drop-no-attr-arg.rs:14:1
    |
  7 | #[pin_project]