diff --git a/tokio/src/task/task_local.rs b/tokio/src/task/task_local.rs
index b55c6abc470..0bb90a190aa 100644
--- a/tokio/src/task/task_local.rs
+++ b/tokio/src/task/task_local.rs
@@ -2,6 +2,7 @@ use pin_project_lite::pin_project;
 use std::cell::RefCell;
 use std::error::Error;
 use std::future::Future;
+use std::marker::PhantomPinned;
 use std::pin::Pin;
 use std::task::{Context, Poll};
 use std::{fmt, thread};
@@ -123,6 +124,7 @@ impl<T: 'static> LocalKey<T> {
             local: &self,
             slot: Some(value),
             future: f,
+            _pinned: PhantomPinned,
         }
     }
 
@@ -147,12 +149,14 @@ impl<T: 'static> LocalKey<T> {
     where
         F: FnOnce() -> R,
     {
-        let mut scope = TaskLocalFuture {
+        let scope = TaskLocalFuture {
             local: &self,
             slot: Some(value),
             future: (),
+            _pinned: PhantomPinned,
         };
-        Pin::new(&mut scope).with_task(|_| f())
+        crate::pin!(scope);
+        scope.with_task(|_| f())
     }
 
     /// Accesses the current task-local and runs the provided closure.
@@ -234,6 +238,8 @@ pin_project! {
         slot: Option<T>,
         #[pin]
         future: F,
+        #[pin]
+        _pinned: PhantomPinned,
     }
 }
 
diff --git a/tokio/tests/async_send_sync.rs b/tokio/tests/async_send_sync.rs
index 01e608186f4..12d13239387 100644
--- a/tokio/tests/async_send_sync.rs
+++ b/tokio/tests/async_send_sync.rs
@@ -4,13 +4,30 @@
 
 use std::cell::Cell;
 use std::future::Future;
-use std::io::{Cursor, SeekFrom};
+use std::io::SeekFrom;
 use std::net::SocketAddr;
 use std::pin::Pin;
 use std::rc::Rc;
 use tokio::net::TcpStream;
 use tokio::time::{Duration, Instant};
 
+// The names of these structs behaves better when sorted.
+// Send: Yes, Sync: Yes
+#[derive(Clone)]
+struct YY {}
+
+// Send: Yes, Sync: No
+#[derive(Clone)]
+struct YN {
+    _value: Cell<u8>,
+}
+
+// Send: No, Sync: No
+#[derive(Clone)]
+struct NN {
+    _value: Rc<u8>,
+}
+
 #[allow(dead_code)]
 type BoxFutureSync<T> = std::pin::Pin<Box<dyn std::future::Future<Output = T> + Send + Sync>>;
 #[allow(dead_code)]
@@ -19,11 +36,11 @@ type BoxFutureSend<T> = std::pin::Pin<Box<dyn std::future::Future<Output = T> +
 type BoxFuture<T> = std::pin::Pin<Box<dyn std::future::Future<Output = T>>>;
 
 #[allow(dead_code)]
-type BoxAsyncRead = std::pin::Pin<Box<dyn tokio::io::AsyncBufRead>>;
+type BoxAsyncRead = std::pin::Pin<Box<dyn tokio::io::AsyncBufRead + Send + Sync>>;
 #[allow(dead_code)]
-type BoxAsyncSeek = std::pin::Pin<Box<dyn tokio::io::AsyncSeek>>;
+type BoxAsyncSeek = std::pin::Pin<Box<dyn tokio::io::AsyncSeek + Send + Sync>>;
 #[allow(dead_code)]
-type BoxAsyncWrite = std::pin::Pin<Box<dyn tokio::io::AsyncWrite>>;
+type BoxAsyncWrite = std::pin::Pin<Box<dyn tokio::io::AsyncWrite + Send + Sync>>;
 
 #[allow(dead_code)]
 fn require_send<T: Send>(_t: &T) {}
@@ -59,310 +76,576 @@ macro_rules! into_todo {
         x
     }};
 }
-macro_rules! assert_value {
-    ($type:ty: Send & Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f: $type = todo!();
-            require_send(&f);
-            require_sync(&f);
-        };
-    };
-    ($type:ty: !Send & Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f: $type = todo!();
-            AmbiguousIfSend::some_item(&f);
-            require_sync(&f);
-        };
-    };
-    ($type:ty: Send & !Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f: $type = todo!();
-            require_send(&f);
-            AmbiguousIfSync::some_item(&f);
-        };
+
+macro_rules! async_assert_fn_send {
+    (Send & $(!)?Sync & $(!)?Unpin, $value:expr) => {
+        require_send(&$value);
     };
-    ($type:ty: !Send & !Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f: $type = todo!();
-            AmbiguousIfSend::some_item(&f);
-            AmbiguousIfSync::some_item(&f);
-        };
-    };
-    ($type:ty: Unpin) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f: $type = todo!();
-            require_unpin(&f);
-        };
+    (!Send & $(!)?Sync & $(!)?Unpin, $value:expr) => {
+        AmbiguousIfSend::some_item(&$value);
     };
 }
-macro_rules! async_assert_fn {
-    ($($f:ident $(< $($generic:ty),* > )? )::+($($arg:ty),*): Send & Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f = $($f $(::<$($generic),*>)? )::+( $( into_todo!($arg) ),* );
-            require_send(&f);
-            require_sync(&f);
-        };
+macro_rules! async_assert_fn_sync {
+    ($(!)?Send & Sync & $(!)?Unpin, $value:expr) => {
+        require_sync(&$value);
     };
-    ($($f:ident $(< $($generic:ty),* > )? )::+($($arg:ty),*): Send & !Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f = $($f $(::<$($generic),*>)? )::+( $( into_todo!($arg) ),* );
-            require_send(&f);
-            AmbiguousIfSync::some_item(&f);
-        };
+    ($(!)?Send & !Sync & $(!)?Unpin, $value:expr) => {
+        AmbiguousIfSync::some_item(&$value);
     };
-    ($($f:ident $(< $($generic:ty),* > )? )::+($($arg:ty),*): !Send & Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f = $($f $(::<$($generic),*>)? )::+( $( into_todo!($arg) ),* );
-            AmbiguousIfSend::some_item(&f);
-            require_sync(&f);
-        };
+}
+macro_rules! async_assert_fn_unpin {
+    ($(!)?Send & $(!)?Sync & Unpin, $value:expr) => {
+        require_unpin(&$value);
     };
-    ($($f:ident $(< $($generic:ty),* > )? )::+($($arg:ty),*): !Send & !Sync) => {
-        #[allow(unreachable_code)]
-        #[allow(unused_variables)]
-        const _: fn() = || {
-            let f = $($f $(::<$($generic),*>)? )::+( $( into_todo!($arg) ),* );
-            AmbiguousIfSend::some_item(&f);
-            AmbiguousIfSync::some_item(&f);
-        };
+    ($(!)?Send & $(!)?Sync & !Unpin, $value:expr) => {
+        AmbiguousIfUnpin::some_item(&$value);
     };
-    ($($f:ident $(< $($generic:ty),* > )? )::+($($arg:ty),*): !Unpin) => {
+}
+
+macro_rules! async_assert_fn {
+    ($($f:ident $(< $($generic:ty),* > )? )::+($($arg:ty),*): $($tok:tt)*) => {
         #[allow(unreachable_code)]
         #[allow(unused_variables)]
         const _: fn() = || {
             let f = $($f $(::<$($generic),*>)? )::+( $( into_todo!($arg) ),* );
-            AmbiguousIfUnpin::some_item(&f);
+            async_assert_fn_send!($($tok)*, f);
+            async_assert_fn_sync!($($tok)*, f);
+            async_assert_fn_unpin!($($tok)*, f);
         };
     };
-    ($($f:ident $(< $($generic:ty),* > )? )::+($($arg:ty),*): Unpin) => {
+}
+macro_rules! assert_value {
+    ($type:ty: $($tok:tt)*) => {
         #[allow(unreachable_code)]
         #[allow(unused_variables)]
         const _: fn() = || {
-            let f = $($f $(::<$($generic),*>)? )::+( $( into_todo!($arg) ),* );
-            require_unpin(&f);
+            let f: $type = todo!();
+            async_assert_fn_send!($($tok)*, f);
+            async_assert_fn_sync!($($tok)*, f);
+            async_assert_fn_unpin!($($tok)*, f);
         };
     };
 }
 
-async_assert_fn!(tokio::io::copy(&mut TcpStream, &mut TcpStream): Send & Sync);
-async_assert_fn!(tokio::io::empty(): Send & Sync);
-async_assert_fn!(tokio::io::repeat(u8): Send & Sync);
-async_assert_fn!(tokio::io::sink(): Send & Sync);
-async_assert_fn!(tokio::io::split(TcpStream): Send & Sync);
-async_assert_fn!(tokio::io::stderr(): Send & Sync);
-async_assert_fn!(tokio::io::stdin(): Send & Sync);
-async_assert_fn!(tokio::io::stdout(): Send & Sync);
-async_assert_fn!(tokio::io::Split<Cursor<Vec<u8>>>::next_segment(_): Send & Sync);
-
-async_assert_fn!(tokio::fs::canonicalize(&str): Send & Sync);
-async_assert_fn!(tokio::fs::copy(&str, &str): Send & Sync);
-async_assert_fn!(tokio::fs::create_dir(&str): Send & Sync);
-async_assert_fn!(tokio::fs::create_dir_all(&str): Send & Sync);
-async_assert_fn!(tokio::fs::hard_link(&str, &str): Send & Sync);
-async_assert_fn!(tokio::fs::metadata(&str): Send & Sync);
-async_assert_fn!(tokio::fs::read(&str): Send & Sync);
-async_assert_fn!(tokio::fs::read_dir(&str): Send & Sync);
-async_assert_fn!(tokio::fs::read_link(&str): Send & Sync);
-async_assert_fn!(tokio::fs::read_to_string(&str): Send & Sync);
-async_assert_fn!(tokio::fs::remove_dir(&str): Send & Sync);
-async_assert_fn!(tokio::fs::remove_dir_all(&str): Send & Sync);
-async_assert_fn!(tokio::fs::remove_file(&str): Send & Sync);
-async_assert_fn!(tokio::fs::rename(&str, &str): Send & Sync);
-async_assert_fn!(tokio::fs::set_permissions(&str, std::fs::Permissions): Send & Sync);
-async_assert_fn!(tokio::fs::symlink_metadata(&str): Send & Sync);
-async_assert_fn!(tokio::fs::write(&str, Vec<u8>): Send & Sync);
-async_assert_fn!(tokio::fs::ReadDir::next_entry(_): Send & Sync);
-async_assert_fn!(tokio::fs::OpenOptions::open(_, &str): Send & Sync);
-async_assert_fn!(tokio::fs::DirEntry::metadata(_): Send & Sync);
-async_assert_fn!(tokio::fs::DirEntry::file_type(_): Send & Sync);
+assert_value!(tokio::fs::DirBuilder: Send & Sync & Unpin);
+assert_value!(tokio::fs::DirEntry: Send & Sync & Unpin);
+assert_value!(tokio::fs::File: Send & Sync & Unpin);
+assert_value!(tokio::fs::OpenOptions: Send & Sync & Unpin);
+assert_value!(tokio::fs::ReadDir: Send & Sync & Unpin);
 
-async_assert_fn!(tokio::fs::File::open(&str): Send & Sync);
-async_assert_fn!(tokio::fs::File::create(&str): Send & Sync);
-async_assert_fn!(tokio::fs::File::sync_all(_): Send & Sync);
-async_assert_fn!(tokio::fs::File::sync_data(_): Send & Sync);
-async_assert_fn!(tokio::fs::File::set_len(_, u64): Send & Sync);
-async_assert_fn!(tokio::fs::File::metadata(_): Send & Sync);
-async_assert_fn!(tokio::fs::File::try_clone(_): Send & Sync);
-async_assert_fn!(tokio::fs::File::into_std(_): Send & Sync);
-async_assert_fn!(tokio::fs::File::set_permissions(_, std::fs::Permissions): Send & Sync);
+async_assert_fn!(tokio::fs::canonicalize(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::copy(&str, &str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::create_dir(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::create_dir_all(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::hard_link(&str, &str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::metadata(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::read(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::read_dir(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::read_link(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::read_to_string(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::remove_dir(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::remove_dir_all(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::remove_file(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::rename(&str, &str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::set_permissions(&str, std::fs::Permissions): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::symlink_metadata(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::write(&str, Vec<u8>): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::ReadDir::next_entry(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::OpenOptions::open(_, &str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::DirBuilder::create(_, &str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::DirEntry::metadata(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::DirEntry::file_type(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::open(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::create(&str): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::sync_all(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::sync_data(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::set_len(_, u64): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::metadata(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::try_clone(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::into_std(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::fs::File::set_permissions(_, std::fs::Permissions): Send & Sync & !Unpin);
 
-async_assert_fn!(tokio::net::lookup_host(SocketAddr): Send & Sync);
-async_assert_fn!(tokio::net::TcpListener::bind(SocketAddr): Send & Sync);
-async_assert_fn!(tokio::net::TcpListener::accept(_): Send & Sync);
-async_assert_fn!(tokio::net::TcpStream::connect(SocketAddr): Send & Sync);
-async_assert_fn!(tokio::net::TcpStream::peek(_, &mut [u8]): Send & Sync);
-async_assert_fn!(tokio::net::tcp::ReadHalf::peek(_, &mut [u8]): Send & Sync);
-async_assert_fn!(tokio::net::UdpSocket::bind(SocketAddr): Send & Sync);
-async_assert_fn!(tokio::net::UdpSocket::connect(_, SocketAddr): Send & Sync);
-async_assert_fn!(tokio::net::UdpSocket::send(_, &[u8]): Send & Sync);
-async_assert_fn!(tokio::net::UdpSocket::recv(_, &mut [u8]): Send & Sync);
-async_assert_fn!(tokio::net::UdpSocket::send_to(_, &[u8], SocketAddr): Send & Sync);
-async_assert_fn!(tokio::net::UdpSocket::recv_from(_, &mut [u8]): Send & Sync);
+assert_value!(tokio::net::TcpListener: Send & Sync & Unpin);
+assert_value!(tokio::net::TcpSocket: Send & Sync & Unpin);
+assert_value!(tokio::net::TcpStream: Send & Sync & Unpin);
+assert_value!(tokio::net::UdpSocket: Send & Sync & Unpin);
+assert_value!(tokio::net::tcp::OwnedReadHalf: Send & Sync & Unpin);
+assert_value!(tokio::net::tcp::OwnedWriteHalf: Send & Sync & Unpin);
+assert_value!(tokio::net::tcp::ReadHalf<'_>: Send & Sync & Unpin);
+assert_value!(tokio::net::tcp::ReuniteError: Send & Sync & Unpin);
+assert_value!(tokio::net::tcp::WriteHalf<'_>: Send & Sync & Unpin);
+async_assert_fn!(tokio::net::TcpListener::accept(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::TcpListener::bind(SocketAddr): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::TcpStream::connect(SocketAddr): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::TcpStream::peek(_, &mut [u8]): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::TcpStream::readable(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::TcpStream::ready(_, tokio::io::Interest): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::TcpStream::writable(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::bind(SocketAddr): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::connect(_, SocketAddr): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::peek_from(_, &mut [u8]): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::readable(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::ready(_, tokio::io::Interest): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::recv(_, &mut [u8]): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::recv_from(_, &mut [u8]): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::send(_, &[u8]): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::send_to(_, &[u8], SocketAddr): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::UdpSocket::writable(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::lookup_host(SocketAddr): Send & Sync & !Unpin);
+async_assert_fn!(tokio::net::tcp::ReadHalf::peek(_, &mut [u8]): Send & Sync & !Unpin);
 
 #[cfg(unix)]
 mod unix_datagram {
     use super::*;
-    async_assert_fn!(tokio::net::UnixListener::bind(&str): Send & Sync);
-    async_assert_fn!(tokio::net::UnixListener::accept(_): Send & Sync);
-    async_assert_fn!(tokio::net::UnixDatagram::send(_, &[u8]): Send & Sync);
-    async_assert_fn!(tokio::net::UnixDatagram::recv(_, &mut [u8]): Send & Sync);
-    async_assert_fn!(tokio::net::UnixDatagram::send_to(_, &[u8], &str): Send & Sync);
-    async_assert_fn!(tokio::net::UnixDatagram::recv_from(_, &mut [u8]): Send & Sync);
-    async_assert_fn!(tokio::net::UnixStream::connect(&str): Send & Sync);
+    use tokio::net::*;
+    assert_value!(UnixDatagram: Send & Sync & Unpin);
+    assert_value!(UnixListener: Send & Sync & Unpin);
+    assert_value!(UnixStream: Send & Sync & Unpin);
+    assert_value!(unix::OwnedReadHalf: Send & Sync & Unpin);
+    assert_value!(unix::OwnedWriteHalf: Send & Sync & Unpin);
+    assert_value!(unix::ReadHalf<'_>: Send & Sync & Unpin);
+    assert_value!(unix::ReuniteError: Send & Sync & Unpin);
+    assert_value!(unix::SocketAddr: Send & Sync & Unpin);
+    assert_value!(unix::UCred: Send & Sync & Unpin);
+    assert_value!(unix::WriteHalf<'_>: Send & Sync & Unpin);
+    async_assert_fn!(UnixDatagram::readable(_): Send & Sync & !Unpin);
+    async_assert_fn!(UnixDatagram::ready(_, tokio::io::Interest): Send & Sync & !Unpin);
+    async_assert_fn!(UnixDatagram::recv(_, &mut [u8]): Send & Sync & !Unpin);
+    async_assert_fn!(UnixDatagram::recv_from(_, &mut [u8]): Send & Sync & !Unpin);
+    async_assert_fn!(UnixDatagram::send(_, &[u8]): Send & Sync & !Unpin);
+    async_assert_fn!(UnixDatagram::send_to(_, &[u8], &str): Send & Sync & !Unpin);
+    async_assert_fn!(UnixDatagram::writable(_): Send & Sync & !Unpin);
+    async_assert_fn!(UnixListener::accept(_): Send & Sync & !Unpin);
+    async_assert_fn!(UnixStream::connect(&str): Send & Sync & !Unpin);
+    async_assert_fn!(UnixStream::readable(_): Send & Sync & !Unpin);
+    async_assert_fn!(UnixStream::ready(_, tokio::io::Interest): Send & Sync & !Unpin);
+    async_assert_fn!(UnixStream::writable(_): Send & Sync & !Unpin);
 }
 
-async_assert_fn!(tokio::process::Child::wait_with_output(_): Send & Sync);
-async_assert_fn!(tokio::signal::ctrl_c(): Send & Sync);
-#[cfg(unix)]
-async_assert_fn!(tokio::signal::unix::Signal::recv(_): Send & Sync);
+#[cfg(windows)]
+mod windows_named_pipe {
+    use super::*;
+    use tokio::net::windows::named_pipe::*;
+    assert_value!(ClientOptions: Send & Sync & Unpin);
+    assert_value!(NamedPipeClient: Send & Sync & Unpin);
+    assert_value!(NamedPipeServer: Send & Sync & Unpin);
+    assert_value!(PipeEnd: Send & Sync & Unpin);
+    assert_value!(PipeInfo: Send & Sync & Unpin);
+    assert_value!(PipeMode: Send & Sync & Unpin);
+    assert_value!(ServerOptions: Send & Sync & Unpin);
+    async_assert_fn!(NamedPipeClient::readable(_): Send & Sync & !Unpin);
+    async_assert_fn!(NamedPipeClient::ready(_, tokio::io::Interest): Send & Sync & !Unpin);
+    async_assert_fn!(NamedPipeClient::writable(_): Send & Sync & !Unpin);
+    async_assert_fn!(NamedPipeServer::connect(_): Send & Sync & !Unpin);
+    async_assert_fn!(NamedPipeServer::readable(_): Send & Sync & !Unpin);
+    async_assert_fn!(NamedPipeServer::ready(_, tokio::io::Interest): Send & Sync & !Unpin);
+    async_assert_fn!(NamedPipeServer::writable(_): Send & Sync & !Unpin);
+}
 
-async_assert_fn!(tokio::sync::Barrier::wait(_): Send & Sync);
-async_assert_fn!(tokio::sync::Mutex<u8>::lock(_): Send & Sync);
-async_assert_fn!(tokio::sync::Mutex<Cell<u8>>::lock(_): Send & Sync);
-async_assert_fn!(tokio::sync::Mutex<Rc<u8>>::lock(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::Mutex<u8>::lock_owned(_): Send & Sync);
-async_assert_fn!(tokio::sync::Mutex<Cell<u8>>::lock_owned(_): Send & Sync);
-async_assert_fn!(tokio::sync::Mutex<Rc<u8>>::lock_owned(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::Notify::notified(_): Send & Sync);
-async_assert_fn!(tokio::sync::RwLock<u8>::read(_): Send & Sync);
-async_assert_fn!(tokio::sync::RwLock<u8>::write(_): Send & Sync);
-async_assert_fn!(tokio::sync::RwLock<Cell<u8>>::read(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::RwLock<Cell<u8>>::write(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::RwLock<Rc<u8>>::read(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::RwLock<Rc<u8>>::write(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::Semaphore::acquire(_): Send & Sync);
+assert_value!(tokio::process::Child: Send & Sync & Unpin);
+assert_value!(tokio::process::ChildStderr: Send & Sync & Unpin);
+assert_value!(tokio::process::ChildStdin: Send & Sync & Unpin);
+assert_value!(tokio::process::ChildStdout: Send & Sync & Unpin);
+assert_value!(tokio::process::Command: Send & Sync & Unpin);
+async_assert_fn!(tokio::process::Child::kill(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::process::Child::wait(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::process::Child::wait_with_output(_): Send & Sync & !Unpin);
 
-async_assert_fn!(tokio::sync::broadcast::Receiver<u8>::recv(_): Send & Sync);
-async_assert_fn!(tokio::sync::broadcast::Receiver<Cell<u8>>::recv(_): Send & Sync);
-async_assert_fn!(tokio::sync::broadcast::Receiver<Rc<u8>>::recv(_): !Send & !Sync);
+async_assert_fn!(tokio::signal::ctrl_c(): Send & Sync & !Unpin);
+#[cfg(unix)]
+mod unix_signal {
+    use super::*;
+    assert_value!(tokio::signal::unix::Signal: Send & Sync & Unpin);
+    assert_value!(tokio::signal::unix::SignalKind: Send & Sync & Unpin);
+    async_assert_fn!(tokio::signal::unix::Signal::recv(_): Send & Sync & !Unpin);
+}
+#[cfg(windows)]
+mod windows_signal {
+    use super::*;
+    assert_value!(tokio::signal::windows::CtrlC: Send & Sync & Unpin);
+    assert_value!(tokio::signal::windows::CtrlBreak: Send & Sync & Unpin);
+    async_assert_fn!(tokio::signal::windows::CtrlC::recv(_): Send & Sync & !Unpin);
+    async_assert_fn!(tokio::signal::windows::CtrlBreak::recv(_): Send & Sync & !Unpin);
+}
 
-async_assert_fn!(tokio::sync::mpsc::Receiver<u8>::recv(_): Send & Sync);
-async_assert_fn!(tokio::sync::mpsc::Receiver<Cell<u8>>::recv(_): Send & Sync);
-async_assert_fn!(tokio::sync::mpsc::Receiver<Rc<u8>>::recv(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::mpsc::Sender<u8>::send(_, u8): Send & Sync);
-async_assert_fn!(tokio::sync::mpsc::Sender<Cell<u8>>::send(_, Cell<u8>): Send & !Sync);
-async_assert_fn!(tokio::sync::mpsc::Sender<Rc<u8>>::send(_, Rc<u8>): !Send & !Sync);
+assert_value!(tokio::sync::AcquireError: Send & Sync & Unpin);
+assert_value!(tokio::sync::Barrier: Send & Sync & Unpin);
+assert_value!(tokio::sync::BarrierWaitResult: Send & Sync & Unpin);
+assert_value!(tokio::sync::MappedMutexGuard<'_, NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::MappedMutexGuard<'_, YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::MappedMutexGuard<'_, YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::Mutex<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::Mutex<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::Mutex<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::MutexGuard<'_, NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::MutexGuard<'_, YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::MutexGuard<'_, YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::Notify: Send & Sync & Unpin);
+assert_value!(tokio::sync::OnceCell<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OnceCell<YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::OnceCell<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::OwnedMutexGuard<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedMutexGuard<YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedMutexGuard<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockMappedWriteGuard<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockMappedWriteGuard<YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockMappedWriteGuard<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockReadGuard<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockReadGuard<YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockReadGuard<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockWriteGuard<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockWriteGuard<YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::OwnedRwLockWriteGuard<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::OwnedSemaphorePermit: Send & Sync & Unpin);
+assert_value!(tokio::sync::RwLock<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLock<YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLock<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::RwLockMappedWriteGuard<'_, NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLockMappedWriteGuard<'_, YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLockMappedWriteGuard<'_, YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::RwLockReadGuard<'_, NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLockReadGuard<'_, YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLockReadGuard<'_, YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::RwLockWriteGuard<'_, NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLockWriteGuard<'_, YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::RwLockWriteGuard<'_, YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::Semaphore: Send & Sync & Unpin);
+assert_value!(tokio::sync::SemaphorePermit<'_>: Send & Sync & Unpin);
+assert_value!(tokio::sync::TryAcquireError: Send & Sync & Unpin);
+assert_value!(tokio::sync::TryLockError: Send & Sync & Unpin);
+assert_value!(tokio::sync::broadcast::Receiver<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::broadcast::Receiver<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::broadcast::Receiver<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::broadcast::Sender<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::broadcast::Sender<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::broadcast::Sender<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::futures::Notified<'_>: Send & Sync & !Unpin);
+assert_value!(tokio::sync::mpsc::OwnedPermit<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::OwnedPermit<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::OwnedPermit<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Permit<'_, NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Permit<'_, YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Permit<'_, YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Receiver<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Receiver<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Receiver<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Sender<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Sender<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::Sender<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::UnboundedReceiver<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::UnboundedReceiver<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::UnboundedReceiver<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::UnboundedSender<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::UnboundedSender<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::UnboundedSender<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::SendError<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::SendError<YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::SendError<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::SendTimeoutError<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::SendTimeoutError<YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::SendTimeoutError<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::TrySendError<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::TrySendError<YN>: Send & !Sync & Unpin);
+assert_value!(tokio::sync::mpsc::error::TrySendError<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::oneshot::Receiver<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::oneshot::Receiver<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::oneshot::Receiver<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::oneshot::Sender<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::oneshot::Sender<YN>: Send & Sync & Unpin);
+assert_value!(tokio::sync::oneshot::Sender<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::watch::Receiver<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::watch::Receiver<YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::watch::Receiver<YY>: Send & Sync & Unpin);
+assert_value!(tokio::sync::watch::Ref<'_, NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::watch::Ref<'_, YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::watch::Ref<'_, YY>: !Send & Sync & Unpin);
+assert_value!(tokio::sync::watch::Sender<NN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::watch::Sender<YN>: !Send & !Sync & Unpin);
+assert_value!(tokio::sync::watch::Sender<YY>: Send & Sync & Unpin);
+async_assert_fn!(tokio::sync::Barrier::wait(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Mutex<NN>::lock(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::Mutex<NN>::lock_owned(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::Mutex<YN>::lock(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Mutex<YN>::lock_owned(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Mutex<YY>::lock(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Mutex<YY>::lock_owned(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Notify::notified(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<NN>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = NN> + Send + Sync>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<NN>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = NN> + Send>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<NN>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = NN>>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<NN>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<NN>> + Send + Sync>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<NN>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<NN>> + Send>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<NN>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<NN>>>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YN>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = YN> + Send + Sync>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YN>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = YN> + Send>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YN>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = YN>>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YN>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<YN>> + Send + Sync>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YN>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<YN>> + Send>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YN>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<YN>>>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YY>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = YY> + Send + Sync>>): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YY>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = YY> + Send>>): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YY>::get_or_init( _, fn() -> Pin<Box<dyn Future<Output = YY>>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YY>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<YY>> + Send + Sync>>): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YY>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<YY>> + Send>>): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::OnceCell<YY>::get_or_try_init( _, fn() -> Pin<Box<dyn Future<Output = std::io::Result<YY>>>>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::RwLock<NN>::read(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::RwLock<NN>::write(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::RwLock<YN>::read(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::RwLock<YN>::write(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::RwLock<YY>::read(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::RwLock<YY>::write(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Semaphore::acquire(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Semaphore::acquire_many(_, u32): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Semaphore::acquire_many_owned(_, u32): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::Semaphore::acquire_owned(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::broadcast::Receiver<NN>::recv(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::broadcast::Receiver<YN>::recv(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::broadcast::Receiver<YY>::recv(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Receiver<NN>::recv(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Receiver<YN>::recv(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Receiver<YY>::recv(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<NN>::closed(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<NN>::reserve(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<NN>::reserve_owned(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<NN>::send(_, NN): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<NN>::send_timeout(_, NN, Duration): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YN>::closed(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YN>::reserve(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YN>::reserve_owned(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YN>::send(_, YN): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YN>::send_timeout(_, YN, Duration): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YY>::closed(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YY>::reserve(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YY>::reserve_owned(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YY>::send(_, YY): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::Sender<YY>::send_timeout(_, YY, Duration): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::UnboundedReceiver<NN>::recv(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::UnboundedReceiver<YN>::recv(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::UnboundedReceiver<YY>::recv(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::UnboundedSender<NN>::closed(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::UnboundedSender<YN>::closed(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::mpsc::UnboundedSender<YY>::closed(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::oneshot::Sender<NN>::closed(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::oneshot::Sender<YN>::closed(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::oneshot::Sender<YY>::closed(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::watch::Receiver<NN>::changed(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::watch::Receiver<YN>::changed(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::watch::Receiver<YY>::changed(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::sync::watch::Sender<NN>::closed(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::watch::Sender<YN>::closed(_): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::sync::watch::Sender<YY>::closed(_): Send & Sync & !Unpin);
 
-async_assert_fn!(tokio::sync::mpsc::UnboundedReceiver<u8>::recv(_): Send & Sync);
-async_assert_fn!(tokio::sync::mpsc::UnboundedReceiver<Cell<u8>>::recv(_): Send & Sync);
-async_assert_fn!(tokio::sync::mpsc::UnboundedReceiver<Rc<u8>>::recv(_): !Send & !Sync);
+async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSync<()>): Send & Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSend<()>): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFuture<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSync<()>): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSend<()>): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFuture<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSync<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSend<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFuture<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::LocalSet::run_until(_, BoxFutureSync<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::task::unconstrained(BoxFuture<()>): !Send & !Sync & Unpin);
+async_assert_fn!(tokio::task::unconstrained(BoxFutureSend<()>): Send & !Sync & Unpin);
+async_assert_fn!(tokio::task::unconstrained(BoxFutureSync<()>): Send & Sync & Unpin);
+assert_value!(tokio::task::LocalSet: !Send & !Sync & Unpin);
+assert_value!(tokio::task::JoinHandle<YY>: Send & Sync & Unpin);
+assert_value!(tokio::task::JoinHandle<YN>: Send & Sync & Unpin);
+assert_value!(tokio::task::JoinHandle<NN>: !Send & !Sync & Unpin);
 
-async_assert_fn!(tokio::sync::watch::Receiver<u8>::changed(_): Send & Sync);
-async_assert_fn!(tokio::sync::watch::Sender<u8>::closed(_): Send & Sync);
-async_assert_fn!(tokio::sync::watch::Sender<Cell<u8>>::closed(_): !Send & !Sync);
-async_assert_fn!(tokio::sync::watch::Sender<Rc<u8>>::closed(_): !Send & !Sync);
+assert_value!(tokio::runtime::Builder: Send & Sync & Unpin);
+assert_value!(tokio::runtime::EnterGuard<'_>: Send & Sync & Unpin);
+assert_value!(tokio::runtime::Handle: Send & Sync & Unpin);
+assert_value!(tokio::runtime::Runtime: Send & Sync & Unpin);
 
-async_assert_fn!(tokio::sync::OnceCell<u8>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = u8> + Send + Sync>>): Send & Sync);
-async_assert_fn!(tokio::sync::OnceCell<u8>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = u8> + Send>>): Send & !Sync);
-async_assert_fn!(tokio::sync::OnceCell<u8>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = u8>>>): !Send & !Sync);
-async_assert_fn!(tokio::sync::OnceCell<Cell<u8>>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = Cell<u8>> + Send + Sync>>): !Send & !Sync);
-async_assert_fn!(tokio::sync::OnceCell<Cell<u8>>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = Cell<u8>> + Send>>): !Send & !Sync);
-async_assert_fn!(tokio::sync::OnceCell<Cell<u8>>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = Cell<u8>>>>): !Send & !Sync);
-async_assert_fn!(tokio::sync::OnceCell<Rc<u8>>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = Rc<u8>> + Send + Sync>>): !Send & !Sync);
-async_assert_fn!(tokio::sync::OnceCell<Rc<u8>>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = Rc<u8>> + Send>>): !Send & !Sync);
-async_assert_fn!(tokio::sync::OnceCell<Rc<u8>>::get_or_init(
-    _, fn() -> Pin<Box<dyn Future<Output = Rc<u8>>>>): !Send & !Sync);
-assert_value!(tokio::sync::OnceCell<u8>: Send & Sync);
-assert_value!(tokio::sync::OnceCell<Cell<u8>>: Send & !Sync);
-assert_value!(tokio::sync::OnceCell<Rc<u8>>: !Send & !Sync);
+assert_value!(tokio::time::Interval: Send & Sync & Unpin);
+assert_value!(tokio::time::Instant: Send & Sync & Unpin);
+assert_value!(tokio::time::Sleep: Send & Sync & !Unpin);
+assert_value!(tokio::time::Timeout<BoxFutureSync<()>>: Send & Sync & !Unpin);
+assert_value!(tokio::time::Timeout<BoxFutureSend<()>>: Send & !Sync & !Unpin);
+assert_value!(tokio::time::Timeout<BoxFuture<()>>: !Send & !Sync & !Unpin);
+assert_value!(tokio::time::error::Elapsed: Send & Sync & Unpin);
+assert_value!(tokio::time::error::Error: Send & Sync & Unpin);
+async_assert_fn!(tokio::time::advance(Duration): Send & Sync & !Unpin);
+async_assert_fn!(tokio::time::sleep(Duration): Send & Sync & !Unpin);
+async_assert_fn!(tokio::time::sleep_until(Instant): Send & Sync & !Unpin);
+async_assert_fn!(tokio::time::timeout(Duration, BoxFutureSync<()>): Send & Sync & !Unpin);
+async_assert_fn!(tokio::time::timeout(Duration, BoxFutureSend<()>): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::time::timeout(Duration, BoxFuture<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::time::timeout_at(Instant, BoxFutureSync<()>): Send & Sync & !Unpin);
+async_assert_fn!(tokio::time::timeout_at(Instant, BoxFutureSend<()>): Send & !Sync & !Unpin);
+async_assert_fn!(tokio::time::timeout_at(Instant, BoxFuture<()>): !Send & !Sync & !Unpin);
+async_assert_fn!(tokio::time::Interval::tick(_): Send & Sync & !Unpin);
 
-async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSync<()>): Send & Sync);
-async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSend<()>): Send & !Sync);
-async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFuture<()>): !Send & !Sync);
-async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSync<()>): Send & !Sync);
-async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSend<()>): Send & !Sync);
-async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFuture<()>): !Send & !Sync);
-async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSync<()>): !Send & !Sync);
-async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSend<()>): !Send & !Sync);
-async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFuture<()>): !Send & !Sync);
-async_assert_fn!(tokio::task::LocalSet::run_until(_, BoxFutureSync<()>): !Send & !Sync);
-assert_value!(tokio::task::LocalSet: !Send & !Sync);
+assert_value!(tokio::io::BufReader<TcpStream>: Send & Sync & Unpin);
+assert_value!(tokio::io::BufStream<TcpStream>: Send & Sync & Unpin);
+assert_value!(tokio::io::BufWriter<TcpStream>: Send & Sync & Unpin);
+assert_value!(tokio::io::DuplexStream: Send & Sync & Unpin);
+assert_value!(tokio::io::Empty: Send & Sync & Unpin);
+assert_value!(tokio::io::Interest: Send & Sync & Unpin);
+assert_value!(tokio::io::Lines<TcpStream>: Send & Sync & Unpin);
+assert_value!(tokio::io::ReadBuf<'_>: Send & Sync & Unpin);
+assert_value!(tokio::io::ReadHalf<TcpStream>: Send & Sync & Unpin);
+assert_value!(tokio::io::Ready: Send & Sync & Unpin);
+assert_value!(tokio::io::Repeat: Send & Sync & Unpin);
+assert_value!(tokio::io::Sink: Send & Sync & Unpin);
+assert_value!(tokio::io::Split<TcpStream>: Send & Sync & Unpin);
+assert_value!(tokio::io::Stderr: Send & Sync & Unpin);
+assert_value!(tokio::io::Stdin: Send & Sync & Unpin);
+assert_value!(tokio::io::Stdout: Send & Sync & Unpin);
+assert_value!(tokio::io::Take<TcpStream>: Send & Sync & Unpin);
+assert_value!(tokio::io::WriteHalf<TcpStream>: Send & Sync & Unpin);
+async_assert_fn!(tokio::io::copy(&mut TcpStream, &mut TcpStream): Send & Sync & !Unpin);
+async_assert_fn!(
+    tokio::io::copy_bidirectional(&mut TcpStream, &mut TcpStream): Send & Sync & !Unpin
+);
+async_assert_fn!(tokio::io::copy_buf(&mut tokio::io::BufReader<TcpStream>, &mut TcpStream): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::empty(): Send & Sync & Unpin);
+async_assert_fn!(tokio::io::repeat(u8): Send & Sync & Unpin);
+async_assert_fn!(tokio::io::sink(): Send & Sync & Unpin);
+async_assert_fn!(tokio::io::split(TcpStream): Send & Sync & Unpin);
+async_assert_fn!(tokio::io::stderr(): Send & Sync & Unpin);
+async_assert_fn!(tokio::io::stdin(): Send & Sync & Unpin);
+async_assert_fn!(tokio::io::stdout(): Send & Sync & Unpin);
+async_assert_fn!(tokio::io::Split<tokio::io::BufReader<TcpStream>>::next_segment(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::Lines<tokio::io::BufReader<TcpStream>>::next_line(_): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncBufReadExt::read_until(&mut BoxAsyncRead, u8, &mut Vec<u8>): Send & Sync & !Unpin);
+async_assert_fn!(
+    tokio::io::AsyncBufReadExt::read_line(&mut BoxAsyncRead, &mut String): Send & Sync & !Unpin
+);
+async_assert_fn!(tokio::io::AsyncReadExt::read(&mut BoxAsyncRead, &mut [u8]): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_buf(&mut BoxAsyncRead, &mut Vec<u8>): Send & Sync & !Unpin);
+async_assert_fn!(
+    tokio::io::AsyncReadExt::read_exact(&mut BoxAsyncRead, &mut [u8]): Send & Sync & !Unpin
+);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u8(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i8(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u16(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i16(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u32(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i32(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u64(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i64(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u128(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i128(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u16_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i16_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u32_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i32_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u64_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i64_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_u128_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_i128_le(&mut BoxAsyncRead): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncReadExt::read_to_end(&mut BoxAsyncRead, &mut Vec<u8>): Send & Sync & !Unpin);
+async_assert_fn!(
+    tokio::io::AsyncReadExt::read_to_string(&mut BoxAsyncRead, &mut String): Send & Sync & !Unpin
+);
+async_assert_fn!(tokio::io::AsyncSeekExt::seek(&mut BoxAsyncSeek, SeekFrom): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncSeekExt::stream_position(&mut BoxAsyncSeek): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncWriteExt::write(&mut BoxAsyncWrite, &[u8]): Send & Sync & !Unpin);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_vectored(&mut BoxAsyncWrite, _): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_buf(&mut BoxAsyncWrite, &mut bytes::Bytes): Send
+        & Sync
+        & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_all_buf(&mut BoxAsyncWrite, &mut bytes::Bytes): Send
+        & Sync
+        & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_all(&mut BoxAsyncWrite, &[u8]): Send & Sync & !Unpin
+);
+async_assert_fn!(tokio::io::AsyncWriteExt::write_u8(&mut BoxAsyncWrite, u8): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncWriteExt::write_i8(&mut BoxAsyncWrite, i8): Send & Sync & !Unpin);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u16(&mut BoxAsyncWrite, u16): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i16(&mut BoxAsyncWrite, i16): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u32(&mut BoxAsyncWrite, u32): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i32(&mut BoxAsyncWrite, i32): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u64(&mut BoxAsyncWrite, u64): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i64(&mut BoxAsyncWrite, i64): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u128(&mut BoxAsyncWrite, u128): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i128(&mut BoxAsyncWrite, i128): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u16_le(&mut BoxAsyncWrite, u16): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i16_le(&mut BoxAsyncWrite, i16): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u32_le(&mut BoxAsyncWrite, u32): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i32_le(&mut BoxAsyncWrite, i32): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u64_le(&mut BoxAsyncWrite, u64): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i64_le(&mut BoxAsyncWrite, i64): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_u128_le(&mut BoxAsyncWrite, u128): Send & Sync & !Unpin
+);
+async_assert_fn!(
+    tokio::io::AsyncWriteExt::write_i128_le(&mut BoxAsyncWrite, i128): Send & Sync & !Unpin
+);
+async_assert_fn!(tokio::io::AsyncWriteExt::flush(&mut BoxAsyncWrite): Send & Sync & !Unpin);
+async_assert_fn!(tokio::io::AsyncWriteExt::shutdown(&mut BoxAsyncWrite): Send & Sync & !Unpin);
 
-async_assert_fn!(tokio::time::advance(Duration): Send & Sync);
-async_assert_fn!(tokio::time::sleep(Duration): Send & Sync);
-async_assert_fn!(tokio::time::sleep_until(Instant): Send & Sync);
-async_assert_fn!(tokio::time::timeout(Duration, BoxFutureSync<()>): Send & Sync);
-async_assert_fn!(tokio::time::timeout(Duration, BoxFutureSend<()>): Send & !Sync);
-async_assert_fn!(tokio::time::timeout(Duration, BoxFuture<()>): !Send & !Sync);
-async_assert_fn!(tokio::time::timeout_at(Instant, BoxFutureSync<()>): Send & Sync);
-async_assert_fn!(tokio::time::timeout_at(Instant, BoxFutureSend<()>): Send & !Sync);
-async_assert_fn!(tokio::time::timeout_at(Instant, BoxFuture<()>): !Send & !Sync);
-async_assert_fn!(tokio::time::Interval::tick(_): Send & Sync);
+#[cfg(unix)]
+mod unix_asyncfd {
+    use super::*;
+    use tokio::io::unix::*;
 
-assert_value!(tokio::time::Interval: Unpin);
-async_assert_fn!(tokio::time::sleep(Duration): !Unpin);
-async_assert_fn!(tokio::time::sleep_until(Instant): !Unpin);
-async_assert_fn!(tokio::time::timeout(Duration, BoxFuture<()>): !Unpin);
-async_assert_fn!(tokio::time::timeout_at(Instant, BoxFuture<()>): !Unpin);
-async_assert_fn!(tokio::time::Interval::tick(_): !Unpin);
-async_assert_fn!(tokio::io::AsyncBufReadExt::read_until(&mut BoxAsyncRead, u8, &mut Vec<u8>): !Unpin);
-async_assert_fn!(tokio::io::AsyncBufReadExt::read_line(&mut BoxAsyncRead, &mut String): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read(&mut BoxAsyncRead, &mut [u8]): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_exact(&mut BoxAsyncRead, &mut [u8]): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u8(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i8(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u16(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i16(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u32(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i32(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u64(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i64(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u128(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i128(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u16_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i16_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u32_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i32_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u64_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i64_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_u128_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_i128_le(&mut BoxAsyncRead): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_to_end(&mut BoxAsyncRead, &mut Vec<u8>): !Unpin);
-async_assert_fn!(tokio::io::AsyncReadExt::read_to_string(&mut BoxAsyncRead, &mut String): !Unpin);
-async_assert_fn!(tokio::io::AsyncSeekExt::seek(&mut BoxAsyncSeek, SeekFrom): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write(&mut BoxAsyncWrite, &[u8]): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_all(&mut BoxAsyncWrite, &[u8]): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u8(&mut BoxAsyncWrite, u8): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i8(&mut BoxAsyncWrite, i8): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u16(&mut BoxAsyncWrite, u16): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i16(&mut BoxAsyncWrite, i16): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u32(&mut BoxAsyncWrite, u32): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i32(&mut BoxAsyncWrite, i32): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u64(&mut BoxAsyncWrite, u64): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i64(&mut BoxAsyncWrite, i64): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u128(&mut BoxAsyncWrite, u128): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i128(&mut BoxAsyncWrite, i128): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u16_le(&mut BoxAsyncWrite, u16): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i16_le(&mut BoxAsyncWrite, i16): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u32_le(&mut BoxAsyncWrite, u32): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i32_le(&mut BoxAsyncWrite, i32): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u64_le(&mut BoxAsyncWrite, u64): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i64_le(&mut BoxAsyncWrite, i64): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_u128_le(&mut BoxAsyncWrite, u128): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::write_i128_le(&mut BoxAsyncWrite, i128): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::flush(&mut BoxAsyncWrite): !Unpin);
-async_assert_fn!(tokio::io::AsyncWriteExt::shutdown(&mut BoxAsyncWrite): !Unpin);
+    struct ImplsFd<T> {
+        _t: T,
+    }
+    impl<T> std::os::unix::io::AsRawFd for ImplsFd<T> {
+        fn as_raw_fd(&self) -> std::os::unix::io::RawFd {
+            unreachable!()
+        }
+    }
+
+    assert_value!(AsyncFd<ImplsFd<YY>>: Send & Sync & Unpin);
+    assert_value!(AsyncFd<ImplsFd<YN>>: Send & !Sync & Unpin);
+    assert_value!(AsyncFd<ImplsFd<NN>>: !Send & !Sync & Unpin);
+    assert_value!(AsyncFdReadyGuard<'_, ImplsFd<YY>>: Send & Sync & Unpin);
+    assert_value!(AsyncFdReadyGuard<'_, ImplsFd<YN>>: !Send & !Sync & Unpin);
+    assert_value!(AsyncFdReadyGuard<'_, ImplsFd<NN>>: !Send & !Sync & Unpin);
+    assert_value!(AsyncFdReadyMutGuard<'_, ImplsFd<YY>>: Send & Sync & Unpin);
+    assert_value!(AsyncFdReadyMutGuard<'_, ImplsFd<YN>>: Send & !Sync & Unpin);
+    assert_value!(AsyncFdReadyMutGuard<'_, ImplsFd<NN>>: !Send & !Sync & Unpin);
+    assert_value!(TryIoError: Send & Sync & Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YY>>::readable(_): Send & Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YY>>::readable_mut(_): Send & Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YY>>::writable(_): Send & Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YY>>::writable_mut(_): Send & Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YN>>::readable(_): !Send & !Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YN>>::readable_mut(_): Send & !Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YN>>::writable(_): !Send & !Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<YN>>::writable_mut(_): Send & !Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<NN>>::readable(_): !Send & !Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<NN>>::readable_mut(_): !Send & !Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<NN>>::writable(_): !Send & !Sync & !Unpin);
+    async_assert_fn!(AsyncFd<ImplsFd<NN>>::writable_mut(_): !Send & !Sync & !Unpin);
+}