Vendor dependencies for 0.3.0 release

vendor/pin-project/tests/ui/pin_project/add-attr-to-struct.rs

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use std::marker::PhantomPinned;
+
+use auxiliary_macro::add_pin_attr;
+use pin_project::pin_project;
+
+#[pin_project]
+#[add_pin_attr(struct)] //~ ERROR expected attribute arguments in parentheses
+struct Foo {
+    #[pin]
+    f: PhantomPinned,
+}
+
+#[add_pin_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
+#[pin_project]
+struct Bar {
+    #[pin]
+    f: PhantomPinned,
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/add-attr-to-struct.stderr

@@ -0,0 +1,15 @@
+error: expected attribute arguments in parentheses: `pin(...)`
+ --> tests/ui/pin_project/add-attr-to-struct.rs:9:1
+  |
+9 | #[add_pin_attr(struct)] //~ ERROR expected attribute arguments in parentheses
+  | ^^^^^^^^^^^^^^^^^^^^^^^
+  |
+  = note: this error originates in the attribute macro `add_pin_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: #[pin] attribute may only be used on fields of structs or variants
+  --> tests/ui/pin_project/add-attr-to-struct.rs:15:1
+   |
+15 | #[add_pin_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
+   | ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: this error originates in the attribute macro `add_pin_attr` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/add-pinned-field.rs

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use auxiliary_macro::add_pinned_field;
+use pin_project::pin_project;
+
+fn is_unpin<T: Unpin>() {}
+
+#[pin_project]
+#[add_pinned_field]
+struct Foo {
+    #[pin]
+    f: u32,
+}
+
+#[add_pinned_field]
+#[pin_project]
+struct Bar {
+    #[pin]
+    f: u32,
+}
+
+fn main() {
+    is_unpin::<Foo>(); //~ ERROR E0277
+    is_unpin::<Bar>(); //~ ERROR E0277
+}

vendor/pin-project/tests/ui/pin_project/add-pinned-field.stderr

@@ -0,0 +1,54 @@
+error[E0277]: `PhantomPinned` cannot be unpinned
+  --> tests/ui/pin_project/add-pinned-field.rs:23:16
+   |
+23 |     is_unpin::<Foo>(); //~ ERROR E0277
+   |                ^^^ within `__Foo<'_>`, the trait `Unpin` is not implemented for `PhantomPinned`
+   |
+   = 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 because it appears within the type `__Foo<'_>`
+  --> tests/ui/pin_project/add-pinned-field.rs:10:8
+   |
+10 | struct Foo {
+   |        ^^^
+note: required for `Foo` to implement `Unpin`
+  --> tests/ui/pin_project/add-pinned-field.rs:8:1
+   |
+8  | #[pin_project]
+   | ^^^^^^^^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
+9  | #[add_pinned_field]
+10 | struct Foo {
+   |        ^^^
+note: required by a bound in `is_unpin`
+  --> tests/ui/pin_project/add-pinned-field.rs:6:16
+   |
+6  | fn is_unpin<T: Unpin>() {}
+   |                ^^^^^ required by this bound in `is_unpin`
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+  --> tests/ui/pin_project/add-pinned-field.rs:24:16
+   |
+24 |     is_unpin::<Bar>(); //~ ERROR E0277
+   |                ^^^ within `__Bar<'_>`, the trait `Unpin` is not implemented for `PhantomPinned`
+   |
+   = 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 because it appears within the type `__Bar<'_>`
+  --> tests/ui/pin_project/add-pinned-field.rs:17:8
+   |
+17 | struct Bar {
+   |        ^^^
+note: required for `Bar` to implement `Unpin`
+  --> tests/ui/pin_project/add-pinned-field.rs:16:1
+   |
+16 | #[pin_project]
+   | ^^^^^^^^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
+17 | struct Bar {
+   |        ^^^
+note: required by a bound in `is_unpin`
+  --> tests/ui/pin_project/add-pinned-field.rs:6:16
+   |
+6  | fn is_unpin<T: Unpin>() {}
+   |                ^^^^^ required by this bound in `is_unpin`
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/conflict-drop.rs

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project] //~ ERROR E0119
+struct Foo<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+impl<T, U> Drop for Foo<T, U> {
+    fn drop(&mut self) {}
+}
+
+#[pin_project(PinnedDrop)] //~ ERROR E0119
+struct Bar<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+#[pinned_drop]
+impl<T, U> PinnedDrop for Bar<T, U> {
+    fn drop(self: Pin<&mut Self>) {}
+}
+
+impl<T, U> Drop for Bar<T, U> {
+    fn drop(&mut self) {}
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/conflict-drop.stderr

@@ -0,0 +1,19 @@
+error[E0119]: conflicting implementations of trait `Drop` for type `Bar<_, _>`
+  --> tests/ui/pin_project/conflict-drop.rs:18:15
+   |
+18 | #[pin_project(PinnedDrop)] //~ ERROR E0119
+   |               ^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
+...
+30 | impl<T, U> Drop for Bar<T, U> {
+   | ----------------------------- first implementation here
+
+error[E0119]: conflicting implementations of trait `FooMustNotImplDrop` for type `Foo<_, _>`
+ --> tests/ui/pin_project/conflict-drop.rs:7:1
+  |
+7 | #[pin_project] //~ ERROR E0119
+  | ^^^^^^^^^^^^^^
+  | |
+  | first implementation here
+  | conflicting implementation for `Foo<_, _>`
+  |
+  = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/conflict-unpin.rs

@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use pin_project::pin_project;
+
+// The same implementation.
+
+#[pin_project] //~ ERROR E0119
+struct Foo<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+// conflicting implementations
+impl<T, U> Unpin for Foo<T, U> where T: Unpin {} // Conditional Unpin impl
+
+// The implementation that under different conditions.
+
+#[pin_project] //~ ERROR E0119
+struct Bar<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+// conflicting implementations
+impl<T, U> Unpin for Bar<T, U> {} // Non-conditional Unpin impl
+
+#[pin_project] //~ ERROR E0119
+struct Baz<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+// conflicting implementations
+impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {} // Conditional Unpin impl
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/conflict-unpin.stderr

@@ -0,0 +1,32 @@
+error[E0119]: conflicting implementations of trait `Unpin` for type `Foo<_, _>`
+  --> tests/ui/pin_project/conflict-unpin.rs:7:1
+   |
+7  | #[pin_project] //~ ERROR E0119
+   | ^^^^^^^^^^^^^^ conflicting implementation for `Foo<_, _>`
+...
+15 | impl<T, U> Unpin for Foo<T, U> where T: Unpin {} // Conditional Unpin impl
+   | --------------------------------------------- first implementation here
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `Unpin` for type `Bar<_, _>`
+  --> tests/ui/pin_project/conflict-unpin.rs:19:1
+   |
+19 | #[pin_project] //~ ERROR E0119
+   | ^^^^^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
+...
+27 | impl<T, U> Unpin for Bar<T, U> {} // Non-conditional Unpin impl
+   | ------------------------------ first implementation here
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `Unpin` for type `Baz<_, _>`
+  --> tests/ui/pin_project/conflict-unpin.rs:29:1
+   |
+29 | #[pin_project] //~ ERROR E0119
+   | ^^^^^^^^^^^^^^ conflicting implementation for `Baz<_, _>`
+...
+37 | impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {} // Conditional Unpin impl
+   | -------------------------------------------- first implementation here
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/impl-unsafe-unpin.rs

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project] //~ ERROR E0119
+struct Foo<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
+
+#[pin_project] //~ ERROR E0119
+struct Bar<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
+
+#[pin_project] //~ ERROR E0119
+struct Baz<T, U> {
+    #[pin]
+    f1: T,
+    f2: U,
+}
+
+unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/impl-unsafe-unpin.stderr

@@ -0,0 +1,32 @@
+error[E0119]: conflicting implementations of trait `UnsafeUnpin` for type `Foo<_, _>`
+  --> tests/ui/pin_project/impl-unsafe-unpin.rs:5:1
+   |
+5  | #[pin_project] //~ ERROR E0119
+   | ^^^^^^^^^^^^^^ conflicting implementation for `Foo<_, _>`
+...
+12 | unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
+   | ---------------------------------------------------------- first implementation here
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `UnsafeUnpin` for type `Bar<_, _>`
+  --> tests/ui/pin_project/impl-unsafe-unpin.rs:14:1
+   |
+14 | #[pin_project] //~ ERROR E0119
+   | ^^^^^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
+...
+21 | unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
+   | ------------------------------------------- first implementation here
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `UnsafeUnpin` for type `Baz<_, _>`
+  --> tests/ui/pin_project/impl-unsafe-unpin.rs:23:1
+   |
+23 | #[pin_project] //~ ERROR E0119
+   | ^^^^^^^^^^^^^^ conflicting implementation for `Baz<_, _>`
+...
+30 | unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
+   | --------------------------------------------------------- first implementation here
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/import_unnamed.rs

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+// Only named projected types can be imported.
+// See visibility.rs for named projected types.
+
+mod pub_ {
+    use pin_project::pin_project;
+
+    #[pin_project]
+    pub struct Default(());
+
+    #[pin_project(project_replace)]
+    pub struct Replace(());
+}
+#[allow(unused_imports)]
+pub mod use_ {
+    #[rustfmt::skip]
+    use crate::pub_::__DefaultProjection; //~ ERROR E0432
+    #[rustfmt::skip]
+    use crate::pub_::__DefaultProjectionRef; //~ ERROR E0432
+    #[rustfmt::skip]
+    use crate::pub_::__ReplaceProjection; //~ ERROR E0432
+    #[rustfmt::skip]
+    use crate::pub_::__ReplaceProjectionOwned; //~ ERROR E0432
+    #[rustfmt::skip]
+    use crate::pub_::__ReplaceProjectionRef; //~ ERROR E0432
+
+    // Confirm that the visibility of the original type is not changed.
+    pub use crate::pub_::{Default, Replace};
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/import_unnamed.stderr

@@ -0,0 +1,29 @@
+error[E0432]: unresolved import `crate::pub_::__DefaultProjection`
+  --> tests/ui/pin_project/import_unnamed.rs:18:9
+   |
+18 |     use crate::pub_::__DefaultProjection; //~ ERROR E0432
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__DefaultProjection` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__DefaultProjectionRef`
+  --> tests/ui/pin_project/import_unnamed.rs:20:9
+   |
+20 |     use crate::pub_::__DefaultProjectionRef; //~ ERROR E0432
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__DefaultProjectionRef` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__ReplaceProjection`
+  --> tests/ui/pin_project/import_unnamed.rs:22:9
+   |
+22 |     use crate::pub_::__ReplaceProjection; //~ ERROR E0432
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__ReplaceProjection` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__ReplaceProjectionOwned`
+  --> tests/ui/pin_project/import_unnamed.rs:24:9
+   |
+24 |     use crate::pub_::__ReplaceProjectionOwned; //~ ERROR E0432
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__ReplaceProjectionOwned` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__ReplaceProjectionRef`
+  --> tests/ui/pin_project/import_unnamed.rs:26:9
+   |
+26 |     use crate::pub_::__ReplaceProjectionRef; //~ ERROR E0432
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__ReplaceProjectionRef` in `pub_`

vendor/pin-project/tests/ui/pin_project/invalid.rs

@@ -0,0 +1,282 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+mod pin_argument {
+    use pin_project::pin_project;
+
+    #[pin_project]
+    struct Struct {
+        #[pin()] //~ ERROR unexpected token in attribute
+        f: (),
+    }
+
+    #[pin_project]
+    struct TupleStruct(#[pin(foo)] ()); //~ ERROR unexpected token in attribute
+
+    #[pin_project]
+    enum EnumTuple {
+        V(#[pin(foo)] ()), //~ ERROR unexpected token in attribute
+    }
+
+    #[pin_project]
+    enum EnumStruct {
+        V {
+            #[pin(foo)] //~ ERROR unexpected token in attribute
+            f: (),
+        },
+    }
+}
+
+mod pin_attribute {
+    use pin_project::pin_project;
+
+    #[pin_project]
+    struct DuplicateStruct {
+        #[pin]
+        #[pin] //~ ERROR duplicate #[pin] attribute
+        f: (),
+    }
+
+    #[pin_project]
+    struct DuplicateTupleStruct(
+        #[pin]
+        #[pin]
+        (),
+        //~^^ ERROR duplicate #[pin] attribute
+    );
+
+    #[pin_project]
+    enum DuplicateEnumTuple {
+        V(
+            #[pin]
+            #[pin]
+            (),
+            //~^^ ERROR duplicate #[pin] attribute
+        ),
+    }
+
+    #[pin_project]
+    enum DuplicateEnumStruct {
+        V {
+            #[pin]
+            #[pin] //~ ERROR duplicate #[pin] attribute
+            f: (),
+        },
+    }
+}
+
+mod pin_item {
+    use pin_project::pin_project;
+
+    #[pin_project]
+    #[pin] //~ ERROR may only be used on fields of structs or variants
+    struct Struct {
+        #[pin]
+        f: (),
+    }
+
+    #[pin_project]
+    enum Variant {
+        #[pin] //~ ERROR may only be used on fields of structs or variants
+        V(()),
+    }
+
+    #[pin_project]
+    #[pin] //~ ERROR may only be used on fields of structs or variants
+    enum Enum {
+        V(()),
+    }
+}
+
+mod pin_project_argument {
+    use pin_project::pin_project;
+
+    #[pin_project(Replace)] //~ ERROR `Replace` argument was removed, use `project_replace` argument instead
+    struct RemovedReplace(#[pin] ());
+
+    #[pin_project(UnsafeUnpin,,)] //~ ERROR expected identifier
+    struct Unexpected1(#[pin] ());
+
+    #[pin_project(Foo)] //~ ERROR unexpected argument
+    struct Unexpected2(#[pin] ());
+
+    #[pin_project(,UnsafeUnpin)] //~ ERROR expected identifier
+    struct Unexpected3(#[pin] ());
+
+    #[pin_project()] // Ok
+    struct Unexpected4(#[pin] ());
+
+    #[pin_project(PinnedDrop PinnedDrop)] //~ ERROR expected `,`
+    struct Unexpected5(#[pin] ());
+
+    #[pin_project(PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
+    struct DuplicatePinnedDrop(#[pin] ());
+
+    #[pin_project(UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
+    struct DuplicateUnsafeUnpin(#[pin] ());
+
+    #[pin_project(!Unpin, !Unpin)] //~ ERROR duplicate `!Unpin` argument
+    struct DuplicateNotUnpin(#[pin] ());
+
+    #[pin_project(PinnedDrop, UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
+    struct Duplicate3(#[pin] ());
+
+    #[pin_project(PinnedDrop, UnsafeUnpin, PinnedDrop, UnsafeUnpin)] //~ ERROR duplicate `PinnedDrop` argument
+    struct Duplicate4(#[pin] ());
+
+    #[pin_project(project = A, project = B)] //~ ERROR duplicate `project` argument
+    struct DuplicateProject(#[pin] ());
+
+    #[pin_project(project = A, project_ref = A, project = B)] //~ ERROR duplicate `project` argument
+    struct DuplicateProject2(#[pin] ());
+
+    #[pin_project(project_ref = A, project_ref = B)] //~ ERROR duplicate `project_ref` argument
+    struct DuplicateProjectRef(#[pin] ());
+
+    #[pin_project(project_replace = A, project_replace = B)] //~ ERROR duplicate `project_replace` argument
+    struct DuplicateProjectReplace1(#[pin] ());
+
+    #[pin_project(project_replace, project_replace = B)] //~ ERROR duplicate `project_replace` argument
+    struct DuplicateProjectReplace2(#[pin] ());
+
+    #[pin_project(project_replace = A, project_replace)] //~ ERROR duplicate `project_replace` argument
+    struct DuplicateProjectReplace3(#[pin] ());
+
+    #[pin_project(project_replace = A)] // Ok
+    struct ProjectReplaceWithoutReplace(#[pin] ());
+
+    #[pin_project(PinnedDrop, project_replace)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
+    struct PinnedDropWithProjectReplace1(#[pin] ());
+
+    #[pin_project(project_replace, UnsafeUnpin, PinnedDrop)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
+    struct PinnedDropWithProjectReplace2(#[pin] ());
+
+    #[pin_project(UnsafeUnpin, !Unpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+    struct UnsafeUnpinWithNotUnpin1(#[pin] ());
+
+    #[pin_project(!Unpin, PinnedDrop, UnsafeUnpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+    struct UnsafeUnpinWithNotUnpin2(#[pin] ());
+
+    #[pin_project(!)] //~ ERROR expected `!Unpin`, found `!`
+    struct NotUnpin1(#[pin] ());
+
+    #[pin_project(Unpin)] //~ ERROR unexpected argument
+    struct NotUnpin2(#[pin] ());
+
+    #[pin_project(project)] //~ ERROR expected `project = <identifier>`, found `project`
+    struct Project1(#[pin] ());
+
+    #[pin_project(project = )] //~ ERROR expected `project = <identifier>`, found `project =`
+    struct Project2(#[pin] ());
+
+    #[pin_project(project = !)] //~ ERROR expected identifier
+    struct Project3(#[pin] ());
+
+    #[pin_project(project_ref)] //~ ERROR expected `project_ref = <identifier>`, found `project_ref`
+    struct ProjectRef1(#[pin] ());
+
+    #[pin_project(project_ref = )] //~ ERROR expected `project_ref = <identifier>`, found `project_ref =`
+    struct ProjectRef2(#[pin] ());
+
+    #[pin_project(project_ref = !)] //~ ERROR expected identifier
+    struct ProjectRef3(#[pin] ());
+
+    #[pin_project(project_replace)] // Ok
+    struct ProjectReplace1(#[pin] ());
+
+    #[pin_project(project_replace = )] //~ ERROR expected `project_replace = <identifier>`, found `project_replace =`
+    struct ProjectReplace2(#[pin] ());
+
+    #[pin_project(project_replace = !)] //~ ERROR expected identifier
+    struct ProjectReplace3(#[pin] ());
+
+    #[pin_project(project_replace)] //~ ERROR `project_replace` argument requires a value when used on enums
+    enum ProjectReplaceEnum {
+        V(#[pin] ()),
+    }
+}
+
+mod pin_project_conflict_naming {
+    use pin_project::pin_project;
+
+    #[pin_project(project = OrigAndProj)] //~ ERROR name `OrigAndProj` is the same as the original type name
+    struct OrigAndProj(#[pin] ());
+
+    #[pin_project(project_ref = OrigAndProjRef)] //~ ERROR name `OrigAndProjRef` is the same as the original type name
+    struct OrigAndProjRef(#[pin] ());
+
+    #[pin_project(project_replace = OrigAndProjOwn)] //~ ERROR name `OrigAndProjOwn` is the same as the original type name
+    struct OrigAndProjOwn(#[pin] ());
+
+    #[pin_project(project = A, project_ref = A)] //~ ERROR name `A` is already specified by `project` argument
+    struct ProjAndProjRef(#[pin] ());
+
+    #[pin_project(project = A, project_replace = A)] //~ ERROR name `A` is already specified by `project` argument
+    struct ProjAndProjOwn(#[pin] ());
+
+    #[pin_project(project_ref = A, project_replace = A)] //~ ERROR name `A` is already specified by `project_ref` argument
+    struct ProjRefAndProjOwn(#[pin] ());
+}
+
+mod pin_project_attribute {
+    use pin_project::pin_project;
+
+    #[pin_project]
+    #[pin_project] //~ ERROR duplicate #[pin_project] attribute
+    struct Duplicate(#[pin] ());
+}
+
+mod pin_project_item {
+    use pin_project::pin_project;
+
+    #[pin_project]
+    struct Struct {} //~ ERROR may not be used on structs with zero fields
+
+    #[pin_project]
+    struct TupleStruct(); //~ ERROR may not be used on structs with zero fields
+
+    #[pin_project]
+    struct UnitStruct; //~ ERROR may not be used on structs with zero fields
+
+    #[pin_project]
+    enum EnumEmpty {} //~ ERROR may not be used on enums without variants
+
+    #[pin_project]
+    enum EnumDiscriminant {
+        V = 2, //~ ERROR may not be used on enums with discriminants
+    }
+
+    #[pin_project]
+    enum EnumZeroFields {
+        Unit, //~ ERROR may not be used on enums with zero fields
+        Tuple(),
+        Struct {},
+    }
+
+    #[pin_project]
+    union Union {
+        //~^ ERROR may only be used on structs or enums
+        f: (),
+    }
+
+    #[pin_project]
+    impl Impl {} //~ ERROR may only be used on structs or enums
+}
+
+// #[repr(packed)] is always detected first, even on unsupported structs.
+mod pin_project_item_packed {
+    use pin_project::pin_project;
+
+    #[pin_project]
+    #[repr(packed)]
+    struct Struct {} //~ ERROR may not be used on #[repr(packed)] types
+
+    #[pin_project]
+    #[repr(packed)]
+    struct TupleStruct(); //~ ERROR may not be used on #[repr(packed)] types
+
+    #[pin_project]
+    #[repr(packed)]
+    struct UnitStruct; //~ ERROR may not be used on #[repr(packed)] types
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/invalid.stderr

@@ -0,0 +1,364 @@
+error: unexpected token in attribute
+ --> tests/ui/pin_project/invalid.rs:8:14
+  |
+8 |         #[pin()] //~ ERROR unexpected token in attribute
+  |              ^
+
+error: unexpected token in attribute
+  --> tests/ui/pin_project/invalid.rs:13:29
+   |
+13 |     struct TupleStruct(#[pin(foo)] ()); //~ ERROR unexpected token in attribute
+   |                             ^
+
+error: unexpected token in attribute
+  --> tests/ui/pin_project/invalid.rs:17:16
+   |
+17 |         V(#[pin(foo)] ()), //~ ERROR unexpected token in attribute
+   |                ^
+
+error: unexpected token in attribute
+  --> tests/ui/pin_project/invalid.rs:23:18
+   |
+23 |             #[pin(foo)] //~ ERROR unexpected token in attribute
+   |                  ^
+
+error: duplicate #[pin] attribute
+  --> tests/ui/pin_project/invalid.rs:35:9
+   |
+35 |         #[pin] //~ ERROR duplicate #[pin] attribute
+   |         ^^^^^^
+
+error: duplicate #[pin] attribute
+  --> tests/ui/pin_project/invalid.rs:42:9
+   |
+42 |         #[pin]
+   |         ^^^^^^
+
+error: duplicate #[pin] attribute
+  --> tests/ui/pin_project/invalid.rs:51:13
+   |
+51 |             #[pin]
+   |             ^^^^^^
+
+error: duplicate #[pin] attribute
+  --> tests/ui/pin_project/invalid.rs:61:13
+   |
+61 |             #[pin] //~ ERROR duplicate #[pin] attribute
+   |             ^^^^^^
+
+error: #[pin] attribute may only be used on fields of structs or variants
+  --> tests/ui/pin_project/invalid.rs:71:5
+   |
+71 |     #[pin] //~ ERROR may only be used on fields of structs or variants
+   |     ^^^^^^
+
+error: #[pin] attribute may only be used on fields of structs or variants
+  --> tests/ui/pin_project/invalid.rs:79:9
+   |
+79 |         #[pin] //~ ERROR may only be used on fields of structs or variants
+   |         ^^^^^^
+
+error: #[pin] attribute may only be used on fields of structs or variants
+  --> tests/ui/pin_project/invalid.rs:84:5
+   |
+84 |     #[pin] //~ ERROR may only be used on fields of structs or variants
+   |     ^^^^^^
+
+error: `Replace` argument was removed, use `project_replace` argument instead
+  --> tests/ui/pin_project/invalid.rs:93:19
+   |
+93 |     #[pin_project(Replace)] //~ ERROR `Replace` argument was removed, use `project_replace` argument instead
+   |                   ^^^^^^^
+
+error: expected identifier
+  --> tests/ui/pin_project/invalid.rs:96:31
+   |
+96 |     #[pin_project(UnsafeUnpin,,)] //~ ERROR expected identifier
+   |                               ^
+
+error: unexpected argument: Foo
+  --> tests/ui/pin_project/invalid.rs:99:19
+   |
+99 |     #[pin_project(Foo)] //~ ERROR unexpected argument
+   |                   ^^^
+
+error: expected identifier
+   --> tests/ui/pin_project/invalid.rs:102:19
+    |
+102 |     #[pin_project(,UnsafeUnpin)] //~ ERROR expected identifier
+    |                   ^
+
+error: expected `,`
+   --> tests/ui/pin_project/invalid.rs:108:30
+    |
+108 |     #[pin_project(PinnedDrop PinnedDrop)] //~ ERROR expected `,`
+    |                              ^^^^^^^^^^
+
+error: duplicate `PinnedDrop` argument
+   --> tests/ui/pin_project/invalid.rs:111:31
+    |
+111 |     #[pin_project(PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
+    |                               ^^^^^^^^^^
+
+error: duplicate `UnsafeUnpin` argument
+   --> tests/ui/pin_project/invalid.rs:114:32
+    |
+114 |     #[pin_project(UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
+    |                                ^^^^^^^^^^^
+
+error: duplicate `!Unpin` argument
+   --> tests/ui/pin_project/invalid.rs:117:27
+    |
+117 |     #[pin_project(!Unpin, !Unpin)] //~ ERROR duplicate `!Unpin` argument
+    |                           ^^^^^^
+
+error: duplicate `UnsafeUnpin` argument
+   --> tests/ui/pin_project/invalid.rs:120:44
+    |
+120 |     #[pin_project(PinnedDrop, UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
+    |                                            ^^^^^^^^^^^
+
+error: duplicate `PinnedDrop` argument
+   --> tests/ui/pin_project/invalid.rs:123:44
+    |
+123 |     #[pin_project(PinnedDrop, UnsafeUnpin, PinnedDrop, UnsafeUnpin)] //~ ERROR duplicate `PinnedDrop` argument
+    |                                            ^^^^^^^^^^
+
+error: duplicate `project` argument
+   --> tests/ui/pin_project/invalid.rs:126:32
+    |
+126 |     #[pin_project(project = A, project = B)] //~ ERROR duplicate `project` argument
+    |                                ^^^^^^^^^^^
+
+error: duplicate `project` argument
+   --> tests/ui/pin_project/invalid.rs:129:49
+    |
+129 |     #[pin_project(project = A, project_ref = A, project = B)] //~ ERROR duplicate `project` argument
+    |                                                 ^^^^^^^^^^^
+
+error: duplicate `project_ref` argument
+   --> tests/ui/pin_project/invalid.rs:132:36
+    |
+132 |     #[pin_project(project_ref = A, project_ref = B)] //~ ERROR duplicate `project_ref` argument
+    |                                    ^^^^^^^^^^^^^^^
+
+error: duplicate `project_replace` argument
+   --> tests/ui/pin_project/invalid.rs:135:40
+    |
+135 |     #[pin_project(project_replace = A, project_replace = B)] //~ ERROR duplicate `project_replace` argument
+    |                                        ^^^^^^^^^^^^^^^^^^^
+
+error: duplicate `project_replace` argument
+   --> tests/ui/pin_project/invalid.rs:138:36
+    |
+138 |     #[pin_project(project_replace, project_replace = B)] //~ ERROR duplicate `project_replace` argument
+    |                                    ^^^^^^^^^^^^^^^^^^^
+
+error: duplicate `project_replace` argument
+   --> tests/ui/pin_project/invalid.rs:141:40
+    |
+141 |     #[pin_project(project_replace = A, project_replace)] //~ ERROR duplicate `project_replace` argument
+    |                                        ^^^^^^^^^^^^^^^
+
+error: arguments `PinnedDrop` and `project_replace` are mutually exclusive
+   --> tests/ui/pin_project/invalid.rs:147:19
+    |
+147 |     #[pin_project(PinnedDrop, project_replace)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
+    |                   ^^^^^^^^^^
+
+error: arguments `PinnedDrop` and `project_replace` are mutually exclusive
+   --> tests/ui/pin_project/invalid.rs:150:49
+    |
+150 |     #[pin_project(project_replace, UnsafeUnpin, PinnedDrop)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
+    |                                                 ^^^^^^^^^^
+
+error: arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+   --> tests/ui/pin_project/invalid.rs:153:19
+    |
+153 |     #[pin_project(UnsafeUnpin, !Unpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+    |                   ^^^^^^^^^^^
+
+error: arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+   --> tests/ui/pin_project/invalid.rs:156:39
+    |
+156 |     #[pin_project(!Unpin, PinnedDrop, UnsafeUnpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+    |                                       ^^^^^^^^^^^
+
+error: expected `!Unpin`, found `!`
+   --> tests/ui/pin_project/invalid.rs:159:19
+    |
+159 |     #[pin_project(!)] //~ ERROR expected `!Unpin`, found `!`
+    |                   ^
+
+error: unexpected argument: Unpin
+   --> tests/ui/pin_project/invalid.rs:162:19
+    |
+162 |     #[pin_project(Unpin)] //~ ERROR unexpected argument
+    |                   ^^^^^
+
+error: expected `project = <identifier>`, found `project`
+   --> tests/ui/pin_project/invalid.rs:165:19
+    |
+165 |     #[pin_project(project)] //~ ERROR expected `project = <identifier>`, found `project`
+    |                   ^^^^^^^
+
+error: expected `project = <identifier>`, found `project =`
+   --> tests/ui/pin_project/invalid.rs:168:19
+    |
+168 |     #[pin_project(project = )] //~ ERROR expected `project = <identifier>`, found `project =`
+    |                   ^^^^^^^^^
+
+error: expected identifier
+   --> tests/ui/pin_project/invalid.rs:171:29
+    |
+171 |     #[pin_project(project = !)] //~ ERROR expected identifier
+    |                             ^
+
+error: expected `project_ref = <identifier>`, found `project_ref`
+   --> tests/ui/pin_project/invalid.rs:174:19
+    |
+174 |     #[pin_project(project_ref)] //~ ERROR expected `project_ref = <identifier>`, found `project_ref`
+    |                   ^^^^^^^^^^^
+
+error: expected `project_ref = <identifier>`, found `project_ref =`
+   --> tests/ui/pin_project/invalid.rs:177:19
+    |
+177 |     #[pin_project(project_ref = )] //~ ERROR expected `project_ref = <identifier>`, found `project_ref =`
+    |                   ^^^^^^^^^^^^^
+
+error: expected identifier
+   --> tests/ui/pin_project/invalid.rs:180:33
+    |
+180 |     #[pin_project(project_ref = !)] //~ ERROR expected identifier
+    |                                 ^
+
+error: expected `project_replace = <identifier>`, found `project_replace =`
+   --> tests/ui/pin_project/invalid.rs:186:19
+    |
+186 |     #[pin_project(project_replace = )] //~ ERROR expected `project_replace = <identifier>`, found `project_replace =`
+    |                   ^^^^^^^^^^^^^^^^^
+
+error: expected identifier
+   --> tests/ui/pin_project/invalid.rs:189:37
+    |
+189 |     #[pin_project(project_replace = !)] //~ ERROR expected identifier
+    |                                     ^
+
+error: `project_replace` argument requires a value when used on enums
+   --> tests/ui/pin_project/invalid.rs:192:19
+    |
+192 |     #[pin_project(project_replace)] //~ ERROR `project_replace` argument requires a value when used on enums
+    |                   ^^^^^^^^^^^^^^^
+
+error: name `OrigAndProj` is the same as the original type name
+   --> tests/ui/pin_project/invalid.rs:201:29
+    |
+201 |     #[pin_project(project = OrigAndProj)] //~ ERROR name `OrigAndProj` is the same as the original type name
+    |                             ^^^^^^^^^^^
+
+error: name `OrigAndProjRef` is the same as the original type name
+   --> tests/ui/pin_project/invalid.rs:204:33
+    |
+204 |     #[pin_project(project_ref = OrigAndProjRef)] //~ ERROR name `OrigAndProjRef` is the same as the original type name
+    |                                 ^^^^^^^^^^^^^^
+
+error: name `OrigAndProjOwn` is the same as the original type name
+   --> tests/ui/pin_project/invalid.rs:207:37
+    |
+207 |     #[pin_project(project_replace = OrigAndProjOwn)] //~ ERROR name `OrigAndProjOwn` is the same as the original type name
+    |                                     ^^^^^^^^^^^^^^
+
+error: name `A` is already specified by `project` argument
+   --> tests/ui/pin_project/invalid.rs:210:46
+    |
+210 |     #[pin_project(project = A, project_ref = A)] //~ ERROR name `A` is already specified by `project` argument
+    |                                              ^
+
+error: name `A` is already specified by `project` argument
+   --> tests/ui/pin_project/invalid.rs:213:50
+    |
+213 |     #[pin_project(project = A, project_replace = A)] //~ ERROR name `A` is already specified by `project` argument
+    |                                                  ^
+
+error: name `A` is already specified by `project_ref` argument
+   --> tests/ui/pin_project/invalid.rs:216:54
+    |
+216 |     #[pin_project(project_ref = A, project_replace = A)] //~ ERROR name `A` is already specified by `project_ref` argument
+    |                                                      ^
+
+error: duplicate #[pin_project] attribute
+   --> tests/ui/pin_project/invalid.rs:224:5
+    |
+224 |     #[pin_project] //~ ERROR duplicate #[pin_project] attribute
+    |     ^^^^^^^^^^^^^^
+
+error: #[pin_project] attribute may not be used on structs with zero fields
+   --> tests/ui/pin_project/invalid.rs:232:19
+    |
+232 |     struct Struct {} //~ ERROR may not be used on structs with zero fields
+    |                   ^^
+
+error: #[pin_project] attribute may not be used on structs with zero fields
+   --> tests/ui/pin_project/invalid.rs:235:23
+    |
+235 |     struct TupleStruct(); //~ ERROR may not be used on structs with zero fields
+    |                       ^^
+
+error: #[pin_project] attribute may not be used on structs with zero fields
+   --> tests/ui/pin_project/invalid.rs:238:12
+    |
+238 |     struct UnitStruct; //~ ERROR may not be used on structs with zero fields
+    |            ^^^^^^^^^^
+
+error: #[pin_project] attribute may not be used on enums without variants
+   --> tests/ui/pin_project/invalid.rs:241:20
+    |
+241 |     enum EnumEmpty {} //~ ERROR may not be used on enums without variants
+    |                    ^^
+
+error: #[pin_project] attribute may not be used on enums with discriminants
+   --> tests/ui/pin_project/invalid.rs:245:13
+    |
+245 |         V = 2, //~ ERROR may not be used on enums with discriminants
+    |             ^
+
+error: #[pin_project] attribute may not be used on enums with zero fields
+   --> tests/ui/pin_project/invalid.rs:250:9
+    |
+250 | /         Unit, //~ ERROR may not be used on enums with zero fields
+251 | |         Tuple(),
+252 | |         Struct {},
+    | |__________________^
+
+error: #[pin_project] attribute may only be used on structs or enums
+   --> tests/ui/pin_project/invalid.rs:256:5
+    |
+256 | /     union Union {
+257 | |         //~^ ERROR may only be used on structs or enums
+258 | |         f: (),
+259 | |     }
+    | |_____^
+
+error: #[pin_project] attribute may only be used on structs or enums
+   --> tests/ui/pin_project/invalid.rs:262:5
+    |
+262 |     impl Impl {} //~ ERROR may only be used on structs or enums
+    |     ^^^^^^^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+   --> tests/ui/pin_project/invalid.rs:270:12
+    |
+270 |     #[repr(packed)]
+    |            ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+   --> tests/ui/pin_project/invalid.rs:274:12
+    |
+274 |     #[repr(packed)]
+    |            ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+   --> tests/ui/pin_project/invalid.rs:278:12
+    |
+278 |     #[repr(packed)]
+    |            ^^^^^^

vendor/pin-project/tests/ui/pin_project/negative_impls_stable.rs

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+// https://github.com/taiki-e/pin-project/issues/340#issuecomment-2428002670
+
+#[pin_project::pin_project]
+struct Foo<Pinned, Unpinned> {
+    #[pin]
+    pinned: Pinned,
+    unpinned: Unpinned,
+}
+
+struct MyPhantomPinned(::core::marker::PhantomPinned);
+impl Unpin for MyPhantomPinned where for<'cursed> str: Sized {}
+impl Unpin for Foo<MyPhantomPinned, ()> {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+    is_unpin::<Foo<MyPhantomPinned, ()>>()
+}

vendor/pin-project/tests/ui/pin_project/negative_impls_stable.stderr

@@ -0,0 +1,10 @@
+error[E0119]: conflicting implementations of trait `Unpin` for type `Foo<MyPhantomPinned, ()>`
+  --> tests/ui/pin_project/negative_impls_stable.rs:5:1
+   |
+5  | #[pin_project::pin_project]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `Foo<MyPhantomPinned, ()>`
+...
+14 | impl Unpin for Foo<MyPhantomPinned, ()> {}
+   | --------------------------------------- first implementation here
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/overlapping_unpin_struct.rs

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use std::marker::PhantomPinned;
+
+use pin_project::pin_project;
+
+#[pin_project]
+struct S<T> {
+    #[pin]
+    f: T,
+}
+
+struct __S {}
+
+impl Unpin for __S {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+    is_unpin::<S<PhantomPinned>>(); //~ ERROR E0277
+}

vendor/pin-project/tests/ui/pin_project/overlapping_unpin_struct.stderr

@@ -0,0 +1,26 @@
+error[E0277]: `PhantomPinned` cannot be unpinned
+  --> tests/ui/pin_project/overlapping_unpin_struct.rs:20:16
+   |
+20 |     is_unpin::<S<PhantomPinned>>(); //~ ERROR E0277
+   |                ^^^^^^^^^^^^^^^^ within `_::__S<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
+   |
+   = 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 because it appears within the type `_::__S<'_, PhantomPinned>`
+  --> tests/ui/pin_project/overlapping_unpin_struct.rs:8:8
+   |
+8  | struct S<T> {
+   |        ^
+note: required for `S<PhantomPinned>` to implement `Unpin`
+  --> tests/ui/pin_project/overlapping_unpin_struct.rs:7:1
+   |
+7  | #[pin_project]
+   | ^^^^^^^^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
+8  | struct S<T> {
+   |        ^^^^
+note: required by a bound in `is_unpin`
+  --> tests/ui/pin_project/overlapping_unpin_struct.rs:17:16
+   |
+17 | fn is_unpin<T: Unpin>() {}
+   |                ^^^^^ required by this bound in `is_unpin`
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/override-priv-mod.rs

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+// https://discord.com/channels/273534239310479360/512792629516173323/870075511009857617
+
+#![allow(hidden_glob_reexports)]
+
+extern crate pin_project as pin_project_orig;
+extern crate self as pin_project;
+
+pub use ::pin_project_orig::*;
+mod __private {
+    pub use ::pin_project_orig::__private::*;
+    pub trait Drop {}
+}
+
+use std::{marker::PhantomPinned, mem};
+
+#[pin_project] //~ ERROR conflicting implementations of trait `_::FooMustNotImplDrop`
+struct S {
+    #[pin]
+    f: (u8, PhantomPinned),
+}
+
+impl Drop for S {
+    fn drop(&mut self) {
+        let prev = &self.f.0 as *const _ as usize;
+        let moved = mem::take(&mut self.f); // move pinned field
+        let moved = &moved.0 as *const _ as usize;
+        assert_eq!(prev, moved); // panic
+    }
+}
+
+fn main() {
+    let mut x = Box::pin(S { f: (1, PhantomPinned) });
+    let _f = x.as_mut().project().f; // first mutable access
+}

vendor/pin-project/tests/ui/pin_project/override-priv-mod.stderr

@@ -0,0 +1,10 @@
+error[E0119]: conflicting implementations of trait `SMustNotImplDrop` for type `S`
+  --> tests/ui/pin_project/override-priv-mod.rs:18:1
+   |
+18 | #[pin_project] //~ ERROR conflicting implementations of trait `_::FooMustNotImplDrop`
+   | ^^^^^^^^^^^^^^
+   | |
+   | first implementation here
+   | conflicting implementation for `S`
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/packed-enum.rs

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use pin_project::pin_project;
+
+// #[repr(packed)] cannot be apply on enums and will be rejected by rustc.
+// However, we should not rely on the behavior of rustc that rejects this.
+// https://github.com/taiki-e/pin-project/pull/324#discussion_r612388001
+
+#[repr(packed)] //~ ERROR E0517
+enum E1 {
+    V(()),
+}
+
+#[pin_project]
+#[repr(packed)] //~ ERROR E0517
+enum E2 {
+    V(()),
+}
+
+#[repr(packed)] //~ ERROR E0517
+#[pin_project]
+enum E3 {
+    V(()),
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/packed-enum.stderr

@@ -0,0 +1,42 @@
+error: #[repr(packed)] attribute should be applied to a struct or union
+  --> tests/ui/pin_project/packed-enum.rs:15:8
+   |
+15 | #[repr(packed)] //~ ERROR E0517
+   |        ^^^^^^
+
+error: #[repr(packed)] attribute should be applied to a struct or union
+  --> tests/ui/pin_project/packed-enum.rs:20:8
+   |
+20 | #[repr(packed)] //~ ERROR E0517
+   |        ^^^^^^
+
+error[E0517]: attribute should be applied to a struct or union
+  --> tests/ui/pin_project/packed-enum.rs:9:8
+   |
+9  |   #[repr(packed)] //~ ERROR E0517
+   |          ^^^^^^
+10 | / enum E1 {
+11 | |     V(()),
+12 | | }
+   | |_- not a struct or union
+
+error[E0517]: attribute should be applied to a struct or union
+  --> tests/ui/pin_project/packed-enum.rs:15:8
+   |
+15 |   #[repr(packed)] //~ ERROR E0517
+   |          ^^^^^^
+16 | / enum E2 {
+17 | |     V(()),
+18 | | }
+   | |_- not a struct or union
+
+error[E0517]: attribute should be applied to a struct or union
+  --> tests/ui/pin_project/packed-enum.rs:20:8
+   |
+20 |   #[repr(packed)] //~ ERROR E0517
+   |          ^^^^^^
+21 |   #[pin_project]
+22 | / enum E3 {
+23 | |     V(()),
+24 | | }
+   | |_- not a struct or union

vendor/pin-project/tests/ui/pin_project/packed-name-value.rs

@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use pin_project::pin_project;
+
+// #[repr(packed = "")] is not valid format of #[repr(packed)] and will be
+// rejected by rustc.
+// However, we should not rely on the behavior of rustc that rejects this.
+// https://github.com/taiki-e/pin-project/pull/324#discussion_r612388001
+
+// https://github.com/taiki-e/pin-project/pull/324#discussion_r612388001
+// https://github.com/rust-lang/rust/issues/83921
+// #[repr(packed = "")] //~ ERROR E0552
+// struct S1 {
+//     f: (),
+// }
+
+#[pin_project]
+#[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+struct S2 {
+    f: (),
+}
+
+#[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+#[pin_project]
+struct S3 {
+    f: (),
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/packed-name-value.stderr

@@ -0,0 +1,23 @@
+error: #[repr(packed)] attribute should not be name-value pair
+  --> tests/ui/pin_project/packed-name-value.rs:18:8
+   |
+18 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+   |        ^^^^^^^^^^^
+
+error: #[repr(packed)] attribute should not be name-value pair
+  --> tests/ui/pin_project/packed-name-value.rs:23:8
+   |
+23 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+   |        ^^^^^^^^^^^
+
+error[E0693]: incorrect `repr(packed)` attribute format
+  --> tests/ui/pin_project/packed-name-value.rs:18:8
+   |
+18 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+   |        ^^^^^^^^^^^ help: use parentheses instead: `packed()`
+
+error[E0693]: incorrect `repr(packed)` attribute format
+  --> tests/ui/pin_project/packed-name-value.rs:23:8
+   |
+23 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+   |        ^^^^^^^^^^^ help: use parentheses instead: `packed()`

vendor/pin-project/tests/ui/pin_project/packed.rs

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use pin_project::pin_project;
+
+#[pin_project]
+#[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
+struct Packed1 {
+    #[pin]
+    f: u8,
+}
+
+// Test putting 'repr' before the 'pin_project' attribute
+#[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
+#[pin_project]
+struct Packed2 {
+    #[pin]
+    f: u8,
+}
+
+#[pin_project]
+#[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
+struct PackedN1 {
+    #[pin]
+    f: u32,
+}
+
+// Test putting 'repr' before the 'pin_project' attribute
+#[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
+#[pin_project]
+struct PackedN2 {
+    #[pin]
+    f: u32,
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/packed.stderr

@@ -0,0 +1,23 @@
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed.rs:6:8
+  |
+6 | #[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
+  |        ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+  --> tests/ui/pin_project/packed.rs:13:8
+   |
+13 | #[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
+   |        ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+  --> tests/ui/pin_project/packed.rs:21:8
+   |
+21 | #[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
+   |        ^^^^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+  --> tests/ui/pin_project/packed.rs:28:8
+   |
+28 | #[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
+   |        ^^^^^^^^^

vendor/pin-project/tests/ui/pin_project/packed_sneaky-1.rs

@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use std::pin::Pin;
+
+use auxiliary_macro::{hidden_repr, hidden_repr2};
+use pin_project::{pin_project, pinned_drop, UnsafeUnpin};
+
+#[pin_project] //~ ERROR may not be used on #[repr(packed)] types
+#[hidden_repr(packed)]
+struct A {
+    #[pin]
+    f: u32,
+}
+
+#[hidden_repr2]
+#[pin_project] //~ ERROR may not be used on #[repr(packed)] types
+struct B {
+    #[pin]
+    f: u32,
+}
+
+#[pin_project(UnsafeUnpin)] //~ ERROR may not be used on #[repr(packed)] types
+#[hidden_repr(packed)]
+struct C {
+    #[pin]
+    f: u32,
+}
+
+unsafe impl UnsafeUnpin for C {}
+
+#[pin_project(PinnedDrop)] //~ ERROR may not be used on #[repr(packed)] types
+#[hidden_repr(packed)]
+struct D {
+    #[pin]
+    f: u32,
+}
+
+#[pinned_drop]
+impl PinnedDrop for D {
+    fn drop(self: Pin<&mut Self>) {}
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/packed_sneaky-1.stderr

@@ -0,0 +1,25 @@
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed_sneaky-1.rs:9:15
+  |
+9 | #[hidden_repr(packed)]
+  |               ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+  --> tests/ui/pin_project/packed_sneaky-1.rs:15:1
+   |
+15 | #[hidden_repr2]
+   | ^^^^^^^^^^^^^^^
+   |
+   = note: this error originates in the attribute macro `hidden_repr2` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+  --> tests/ui/pin_project/packed_sneaky-1.rs:23:15
+   |
+23 | #[hidden_repr(packed)]
+   |               ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+  --> tests/ui/pin_project/packed_sneaky-1.rs:32:15
+   |
+32 | #[hidden_repr(packed)]
+   |               ^^^^^^

vendor/pin-project/tests/ui/pin_project/packed_sneaky-2.rs

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use auxiliary_macro::hidden_repr_macro;
+use pin_project::pin_project;
+
+hidden_repr_macro! { //~ ERROR may not be used on #[repr(packed)] types
+    #[pin_project]
+    struct B {
+        #[pin]
+        f: u32,
+    }
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/packed_sneaky-2.stderr

@@ -0,0 +1,12 @@
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+  --> tests/ui/pin_project/packed_sneaky-2.rs:6:1
+   |
+6  | / hidden_repr_macro! { //~ ERROR may not be used on #[repr(packed)] types
+7  | |     #[pin_project]
+8  | |     struct B {
+9  | |         #[pin]
+...  |
+12 | | }
+   | |_^
+   |
+   = note: this error originates in the macro `hidden_repr_macro` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/packed_sneaky-3.rs

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use auxiliary_macro::{hidden_repr_macro, HiddenRepr};
+use pin_project::pin_project;
+
+hidden_repr_macro! {} //~ ERROR expected item after attributes
+#[pin_project]
+struct S1 {
+    #[pin]
+    f: u32,
+}
+
+macro_rules! hidden_repr_macro2 {
+    () => {
+        #[repr(packed)] //~ ERROR expected item after attributes
+    };
+}
+
+hidden_repr_macro2! {}
+#[pin_project]
+struct S2 {
+    #[pin]
+    f: u32,
+}
+
+#[derive(HiddenRepr)] //~ ERROR expected item after attributes
+struct S3 {}
+#[pin_project]
+struct S4 {
+    #[pin]
+    f: u32,
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/packed_sneaky-3.stderr

@@ -0,0 +1,32 @@
+error: expected item after attributes
+ --> tests/ui/pin_project/packed_sneaky-3.rs:6:1
+  |
+6 | hidden_repr_macro! {} //~ ERROR expected item after attributes
+  | ^^^^^^^^^^^^^^^^^^^^^
+  |
+  = note: this error originates in the macro `hidden_repr_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: expected item after attributes
+  --> tests/ui/pin_project/packed_sneaky-3.rs:15:9
+   |
+15 |         #[repr(packed)] //~ ERROR expected item after attributes
+   |         ^^^^^^^^^^^^^^^
+...
+19 | hidden_repr_macro2! {}
+   | ---------------------- in this macro invocation
+   |
+   = note: this error originates in the macro `hidden_repr_macro2` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: expected item after attributes
+  --> tests/ui/pin_project/packed_sneaky-3.rs:26:10
+   |
+26 | #[derive(HiddenRepr)] //~ ERROR expected item after attributes
+   |          ^^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `HiddenRepr` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: proc-macro derive produced unparsable tokens
+  --> tests/ui/pin_project/packed_sneaky-3.rs:26:10
+   |
+26 | #[derive(HiddenRepr)] //~ ERROR expected item after attributes
+   |          ^^^^^^^^^^

vendor/pin-project/tests/ui/pin_project/packed_sneaky-4.rs

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+// https://github.com/taiki-e/pin-project/issues/342
+
+use auxiliary_macro::hidden_repr2;
+use pin_project::pin_project;
+
+#[pin_project] //~ ERROR reference to packed field is unaligned
+#[hidden_repr2]
+struct A {
+    #[pin]
+    f: u32,
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/packed_sneaky-4.stderr

@@ -0,0 +1,20 @@
+error[E0793]: reference to packed field is unaligned
+  --> tests/ui/pin_project/packed_sneaky-4.rs:12:5
+   |
+12 |     f: u32,
+   |     ^
+   |
+   = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
+   = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+   = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
+
+error[E0793]: reference to packed field is unaligned
+ --> tests/ui/pin_project/packed_sneaky-4.rs:8:1
+  |
+8 | #[pin_project] //~ ERROR reference to packed field is unaligned
+  | ^^^^^^^^^^^^^^
+  |
+  = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
+  = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+  = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
+  = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/pin-project/tests/ui/pin_project/project_replace_unsized.rs

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use pin_project::pin_project;
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct Struct<T: ?Sized> {
+    f: T,
+}
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct TupleStruct<T: ?Sized>(T);
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/project_replace_unsized.stderr

@@ -0,0 +1,160 @@
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/project_replace_unsized.rs:6:8
+  |
+6 | 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.rs:6:8
+  |
+6 | 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`
+  |
+6 - struct Struct<T: ?Sized> {
+6 + 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.rs:11:8
+   |
+11 | 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.rs:11:8
+   |
+11 | 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`
+   |
+11 - struct TupleStruct<T: ?Sized>(T);
+11 + 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.rs:5:15
+  |
+5 | #[pin_project(project_replace)] //~ ERROR E0277
+  |               ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+6 | 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.rs:6:8
+  |
+6 | struct Struct<T: ?Sized> {
+  |        ^^^^^^
+  = help: unsized fn params are gated as an unstable feature
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+  |
+6 - struct Struct<T: ?Sized> {
+6 + struct Struct<T> {
+  |
+help: function arguments must have a statically known size, borrowed types always have a known size
+  |
+5 | #[pin_project(&project_replace)] //~ ERROR E0277
+  |               +
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/project_replace_unsized.rs:5:1
+  |
+5 | #[pin_project(project_replace)] //~ ERROR E0277
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+6 | 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.rs:6:8
+  |
+6 | struct Struct<T: ?Sized> {
+  |        ^^^^^^
+note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+ --> src/lib.rs
+  |
+  |     pub struct UnsafeOverwriteGuard<T> {
+  |                                     ^ required by the implicit `Sized` requirement on this type parameter in `UnsafeOverwriteGuard`
+  = 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`
+  |
+6   - struct Struct<T: ?Sized> {
+6   + 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.rs:7:5
+  |
+5 | #[pin_project(project_replace)] //~ ERROR E0277
+  | ------------------------------- required by a bound introduced by this call
+6 | struct Struct<T: ?Sized> {
+  |               - this type parameter needs to be `Sized`
+7 |     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`
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+  |
+6    - struct Struct<T: ?Sized> {
+6    + 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.rs:10:15
+   |
+10 | #[pin_project(project_replace)] //~ ERROR E0277
+   |               ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+11 | 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.rs:11:8
+   |
+11 | struct TupleStruct<T: ?Sized>(T);
+   |        ^^^^^^^^^^^
+   = help: unsized fn params are gated as an unstable feature
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+   |
+11 - struct TupleStruct<T: ?Sized>(T);
+11 + struct TupleStruct<T>(T);
+   |
+help: function arguments must have a statically known size, borrowed types always have a known size
+   |
+10 | #[pin_project(&project_replace)] //~ ERROR E0277
+   |               +
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+  --> tests/ui/pin_project/project_replace_unsized.rs:10:1
+   |
+10 | #[pin_project(project_replace)] //~ ERROR E0277
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+11 | 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.rs:11:8
+   |
+11 | struct TupleStruct<T: ?Sized>(T);
+   |        ^^^^^^^^^^^
+note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+  --> src/lib.rs
+   |
+   |     pub struct UnsafeOverwriteGuard<T> {
+   |                                     ^ required by the implicit `Sized` requirement on this type parameter in `UnsafeOverwriteGuard`
+   = 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`
+   |
+11  - struct TupleStruct<T: ?Sized>(T);
+11  + struct TupleStruct<T>(T);
+    |

vendor/pin-project/tests/ui/pin_project/project_replace_unsized_fn_params.rs

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+#![allow(internal_features)]
+#![feature(unsized_fn_params)]
+
+use pin_project::pin_project;
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct Struct<T: ?Sized> {
+    f: T,
+}
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct TupleStruct<T: ?Sized>(T);
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/project_replace_unsized_fn_params.stderr

@@ -0,0 +1,112 @@
+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:9:8
+  |
+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:9:8
+  |
+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`
+  |
+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:14:8
+   |
+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:14:8
+   |
+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`
+   |
+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:8:1
+  |
+8 | #[pin_project(project_replace)] //~ ERROR E0277
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+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:9:8
+  |
+9 | struct Struct<T: ?Sized> {
+  |        ^^^^^^
+note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+ --> src/lib.rs
+  |
+  |     pub struct UnsafeOverwriteGuard<T> {
+  |                                     ^ required by the implicit `Sized` requirement on this type parameter in `UnsafeOverwriteGuard`
+  = 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`
+  |
+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: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`
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+   |
+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:13:1
+   |
+13 | #[pin_project(project_replace)] //~ ERROR E0277
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+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:14:8
+   |
+14 | struct TupleStruct<T: ?Sized>(T);
+   |        ^^^^^^^^^^^
+note: required by an implicit `Sized` bound in `UnsafeOverwriteGuard`
+  --> src/lib.rs
+   |
+   |     pub struct UnsafeOverwriteGuard<T> {
+   |                                     ^ required by the implicit `Sized` requirement on this type parameter in `UnsafeOverwriteGuard`
+   = 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`
+   |
+14  - struct TupleStruct<T: ?Sized>(T);
+14  + struct TupleStruct<T>(T);
+    |

vendor/pin-project/tests/ui/pin_project/remove-attr-from-field.rs

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use std::{marker::PhantomPinned, pin::Pin};
+
+use auxiliary_macro::remove_attr;
+use pin_project::pin_project;
+
+fn is_unpin<T: Unpin>() {}
+
+#[pin_project]
+#[remove_attr(field_all)]
+struct A {
+    #[pin]
+    f: PhantomPinned,
+}
+
+#[remove_attr(field_all)]
+#[pin_project]
+struct B {
+    #[pin]
+    f: PhantomPinned,
+}
+
+fn main() {
+    is_unpin::<A>();
+    is_unpin::<B>();
+
+    let mut x = A { f: PhantomPinned };
+    let x = Pin::new(&mut x).project();
+    let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+
+    let mut x = B { f: PhantomPinned };
+    let x = Pin::new(&mut x).project();
+    let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+}

vendor/pin-project/tests/ui/pin_project/remove-attr-from-field.stderr

@@ -0,0 +1,21 @@
+error[E0308]: mismatched types
+  --> tests/ui/pin_project/remove-attr-from-field.rs:30:38
+   |
+30 |     let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+   |            -----------------------   ^^^ expected `Pin<&mut PhantomPinned>`, found `&mut PhantomPinned`
+   |            |
+   |            expected due to this
+   |
+   = note:         expected struct `Pin<&mut PhantomPinned>`
+           found mutable reference `&mut PhantomPinned`
+
+error[E0308]: mismatched types
+  --> tests/ui/pin_project/remove-attr-from-field.rs:34:38
+   |
+34 |     let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+   |            -----------------------   ^^^ expected `Pin<&mut PhantomPinned>`, found `&mut PhantomPinned`
+   |            |
+   |            expected due to this
+   |
+   = note:         expected struct `Pin<&mut PhantomPinned>`
+           found mutable reference `&mut PhantomPinned`

vendor/pin-project/tests/ui/pin_project/remove-attr-from-struct.rs

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use std::{marker::PhantomPinned, pin::Pin};
+
+use auxiliary_macro::remove_attr;
+use pin_project::pin_project;
+
+fn is_unpin<T: Unpin>() {}
+
+#[pin_project]
+#[remove_attr(struct_all)]
+struct A {
+    #[pin] //~ ERROR cannot find attribute `pin` in this scope
+    f: PhantomPinned,
+}
+
+#[remove_attr(struct_all)]
+#[pin_project]
+struct B {
+    #[pin] //~ ERROR cannot find attribute `pin` in this scope
+    f: PhantomPinned,
+}
+
+#[pin_project] //~ ERROR has been removed
+#[remove_attr(struct_pin)]
+struct C {
+    f: PhantomPinned,
+}
+
+#[remove_attr(struct_pin)]
+#[pin_project] // Ok
+struct D {
+    f: PhantomPinned,
+}
+
+fn main() {
+    is_unpin::<A>(); //~ ERROR E0277
+    is_unpin::<B>(); //~ ERROR E0277
+    is_unpin::<D>(); // Ok
+
+    let mut x = A { f: PhantomPinned };
+    let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+
+    let mut x = B { f: PhantomPinned };
+    let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+
+    let mut x = D { f: PhantomPinned };
+    let _ = Pin::new(&mut x).project(); //~ Ok
+}

vendor/pin-project/tests/ui/pin_project/remove-attr-from-struct.stderr

@@ -0,0 +1,117 @@
+error: #[pin_project] attribute has been removed
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:24:1
+   |
+24 | #[pin_project] //~ ERROR has been removed
+   | ^^^^^^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: cannot find attribute `pin` in this scope
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:20:7
+   |
+20 |     #[pin] //~ ERROR cannot find attribute `pin` in this scope
+   |       ^^^
+
+error: cannot find attribute `pin` in this scope
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:13:7
+   |
+13 |     #[pin] //~ ERROR cannot find attribute `pin` in this scope
+   |       ^^^
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:37:16
+   |
+37 |     is_unpin::<A>(); //~ ERROR E0277
+   |                ^ within `A`, the trait `Unpin` is not implemented for `PhantomPinned`
+   |
+   = 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 because it appears within the type `A`
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:12:8
+   |
+12 | struct A {
+   |        ^
+note: required by a bound in `is_unpin`
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:8:16
+   |
+8  | fn is_unpin<T: Unpin>() {}
+   |                ^^^^^ required by this bound in `is_unpin`
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:38:16
+   |
+38 |     is_unpin::<B>(); //~ ERROR E0277
+   |                ^ within `B`, the trait `Unpin` is not implemented for `PhantomPinned`
+   |
+   = 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 because it appears within the type `B`
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:19:8
+   |
+19 | struct B {
+   |        ^
+note: required by a bound in `is_unpin`
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:8:16
+   |
+8  | fn is_unpin<T: Unpin>() {}
+   |                ^^^^^ required by this bound in `is_unpin`
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:42:22
+   |
+42 |     let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+   |             -------- ^^^^^^ within `A`, the trait `Unpin` is not implemented for `PhantomPinned`
+   |             |
+   |             required by a bound introduced by this call
+   |
+   = 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 because it appears within the type `A`
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:12:8
+   |
+12 | struct A {
+   |        ^
+note: required by a bound in `Pin::<Ptr>::new`
+  --> $RUST/core/src/pin.rs
+   |
+   | impl<Ptr: Deref<Target: Unpin>> Pin<Ptr> {
+   |                         ^^^^^ required by this bound in `Pin::<Ptr>::new`
+...
+   |     pub const fn new(pointer: Ptr) -> Pin<Ptr> {
+   |                  --- required by a bound in this associated function
+
+error[E0599]: no method named `project` found for struct `Pin<&mut A>` in the current scope
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:42:30
+   |
+42 |     let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+   |                              ^^^^^^^ method not found in `Pin<&mut A>`
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:45:22
+   |
+45 |     let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+   |             -------- ^^^^^^ within `B`, the trait `Unpin` is not implemented for `PhantomPinned`
+   |             |
+   |             required by a bound introduced by this call
+   |
+   = 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 because it appears within the type `B`
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:19:8
+   |
+19 | struct B {
+   |        ^
+note: required by a bound in `Pin::<Ptr>::new`
+  --> $RUST/core/src/pin.rs
+   |
+   | impl<Ptr: Deref<Target: Unpin>> Pin<Ptr> {
+   |                         ^^^^^ required by this bound in `Pin::<Ptr>::new`
+...
+   |     pub const fn new(pointer: Ptr) -> Pin<Ptr> {
+   |                  --- required by a bound in this associated function
+
+error[E0599]: no method named `project` found for struct `Pin<&mut B>` in the current scope
+  --> tests/ui/pin_project/remove-attr-from-struct.rs:45:30
+   |
+45 |     let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+   |                              ^^^^^^^ method not found in `Pin<&mut B>`

vendor/pin-project/tests/ui/pin_project/safe_packed_borrows.rs

@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+#![deny(renamed_and_removed_lints)]
+#![deny(safe_packed_borrows)] //~ ERROR has been renamed to `unaligned_references`
+
+// This lint was removed in https://github.com/rust-lang/rust/pull/82525 (nightly-2021-03-28).
+// Refs:
+// - https://github.com/rust-lang/rust/pull/82525
+// - https://github.com/rust-lang/rust/issues/46043
+
+#[repr(packed)]
+struct Packed {
+    f: u32,
+}
+
+#[repr(packed(2))]
+struct PackedN {
+    f: u32,
+}
+
+fn main() {
+    let a = Packed { f: 1 };
+    let _ = &a.f;
+
+    let b = PackedN { f: 1 };
+    let _ = &b.f;
+}

vendor/pin-project/tests/ui/pin_project/safe_packed_borrows.stderr

@@ -0,0 +1,31 @@
+error: lint `safe_packed_borrows` has been removed: converted into hard error, see issue #82523 <https://github.com/rust-lang/rust/issues/82523> for more information
+ --> tests/ui/pin_project/safe_packed_borrows.rs:4:9
+  |
+4 | #![deny(safe_packed_borrows)] //~ ERROR has been renamed to `unaligned_references`
+  |         ^^^^^^^^^^^^^^^^^^^
+  |
+note: the lint level is defined here
+ --> tests/ui/pin_project/safe_packed_borrows.rs:3:9
+  |
+3 | #![deny(renamed_and_removed_lints)]
+  |         ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0793]: reference to packed field is unaligned
+  --> tests/ui/pin_project/safe_packed_borrows.rs:23:13
+   |
+23 |     let _ = &a.f;
+   |             ^^^^
+   |
+   = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
+   = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+   = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
+
+error[E0793]: reference to packed field is unaligned
+  --> tests/ui/pin_project/safe_packed_borrows.rs:26:13
+   |
+26 |     let _ = &b.f;
+   |             ^^^^
+   |
+   = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
+   = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+   = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)

vendor/pin-project/tests/ui/pin_project/unaligned_references.rs

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+// Refs: https://github.com/rust-lang/rust/issues/82523
+
+#[repr(packed)]
+struct Packed {
+    f: u32,
+}
+
+#[repr(packed(2))]
+struct PackedN {
+    f: u32,
+}
+
+fn main() {
+    let a = Packed { f: 1 };
+    let _ = &a.f; //~ ERROR reference to packed field is unaligned
+
+    let b = PackedN { f: 1 };
+    let _ = &b.f; //~ ERROR reference to packed field is unaligned
+}

vendor/pin-project/tests/ui/pin_project/unaligned_references.stderr

@@ -0,0 +1,19 @@
+error[E0793]: reference to packed field is unaligned
+  --> tests/ui/pin_project/unaligned_references.rs:17:13
+   |
+17 |     let _ = &a.f; //~ ERROR reference to packed field is unaligned
+   |             ^^^^
+   |
+   = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
+   = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+   = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
+
+error[E0793]: reference to packed field is unaligned
+  --> tests/ui/pin_project/unaligned_references.rs:20:13
+   |
+20 |     let _ = &b.f; //~ ERROR reference to packed field is unaligned
+   |             ^^^^
+   |
+   = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
+   = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+   = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)

vendor/pin-project/tests/ui/pin_project/unpin_sneaky.rs

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use pin_project::pin_project;
+
+#[pin_project]
+struct S {
+    #[pin]
+    f: u8,
+}
+
+impl Unpin for __S {} //~ ERROR E0412,E0321
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/unpin_sneaky.stderr

@@ -0,0 +1,5 @@
+error[E0412]: cannot find type `__S` in this scope
+  --> tests/ui/pin_project/unpin_sneaky.rs:11:16
+   |
+11 | impl Unpin for __S {} //~ ERROR E0412,E0321
+   |                ^^^ not found in this scope

vendor/pin-project/tests/ui/pin_project/visibility.rs

@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+// Only named projected types can be imported.
+// See import_unnamed.rs for unnamed projected types.
+
+#![allow(unused_imports)]
+
+mod pub_ {
+    use pin_project::pin_project;
+
+    #[pin_project(project = DProj, project_ref = DProjRef)]
+    pub struct Default(());
+
+    #[pin_project(project = RProj, project_ref = RProjRef, project_replace = RProjOwn)]
+    pub struct Replace(());
+}
+pub mod pub_use {
+    #[rustfmt::skip]
+    pub use crate::pub_::DProj; //~ ERROR E0365
+    #[rustfmt::skip]
+    pub use crate::pub_::DProjRef; //~ ERROR E0365
+    #[rustfmt::skip]
+    pub use crate::pub_::RProj; //~ ERROR E0365
+    #[rustfmt::skip]
+    pub use crate::pub_::RProjOwn; //~ ERROR E0365
+    #[rustfmt::skip]
+    pub use crate::pub_::RProjRef; //~ ERROR E0365
+
+    // Confirm that the visibility of the original type is not changed.
+    pub use crate::pub_::{Default, Replace};
+}
+pub mod pub_use2 {
+    // Ok
+    pub(crate) use crate::pub_::{DProj, DProjRef, RProj, RProjOwn, RProjRef};
+}
+
+mod pub_crate {
+    use pin_project::pin_project;
+
+    #[pin_project(project = DProj, project_ref = DProjRef)]
+    pub(crate) struct Default(());
+
+    #[pin_project(project = RProj, project_ref = RProjRef, project_replace = RProjOwn)]
+    pub(crate) struct Replace(());
+}
+pub mod pub_crate_use {
+    // Ok
+    pub(crate) use crate::pub_crate::{DProj, DProjRef, RProj, RProjOwn, RProjRef};
+}
+
+fn main() {}

vendor/pin-project/tests/ui/pin_project/visibility.stderr

@@ -0,0 +1,39 @@
+error[E0365]: `DProj` is only public within the crate, and cannot be re-exported outside
+  --> tests/ui/pin_project/visibility.rs:19:13
+   |
+19 |     pub use crate::pub_::DProj; //~ ERROR E0365
+   |             ^^^^^^^^^^^^^^^^^^ re-export of crate public `DProj`
+   |
+   = note: consider declaring type or module `DProj` with `pub`
+
+error[E0365]: `DProjRef` is only public within the crate, and cannot be re-exported outside
+  --> tests/ui/pin_project/visibility.rs:21:13
+   |
+21 |     pub use crate::pub_::DProjRef; //~ ERROR E0365
+   |             ^^^^^^^^^^^^^^^^^^^^^ re-export of crate public `DProjRef`
+   |
+   = note: consider declaring type or module `DProjRef` with `pub`
+
+error[E0365]: `RProj` is only public within the crate, and cannot be re-exported outside
+  --> tests/ui/pin_project/visibility.rs:23:13
+   |
+23 |     pub use crate::pub_::RProj; //~ ERROR E0365
+   |             ^^^^^^^^^^^^^^^^^^ re-export of crate public `RProj`
+   |
+   = note: consider declaring type or module `RProj` with `pub`
+
+error[E0365]: `RProjOwn` is only public within the crate, and cannot be re-exported outside
+  --> tests/ui/pin_project/visibility.rs:25:13
+   |
+25 |     pub use crate::pub_::RProjOwn; //~ ERROR E0365
+   |             ^^^^^^^^^^^^^^^^^^^^^ re-export of crate public `RProjOwn`
+   |
+   = note: consider declaring type or module `RProjOwn` with `pub`
+
+error[E0365]: `RProjRef` is only public within the crate, and cannot be re-exported outside
+  --> tests/ui/pin_project/visibility.rs:27:13
+   |
+27 |     pub use crate::pub_::RProjRef; //~ ERROR E0365
+   |             ^^^^^^^^^^^^^^^^^^^^^ re-export of crate public `RProjRef`
+   |
+   = note: consider declaring type or module `RProjRef` with `pub`