1 files changed, 13 insertions, 4 deletions
diff --git a/src/io/util/write.rs b/src/io/util/write.rs
index 433a421..92169eb 100644
--- a/src/io/util/write.rs
+++ b/src/io/util/write.rs
@@ -1,17 +1,22 @@
 use crate::io::AsyncWrite;
 
+use pin_project_lite::pin_project;
 use std::future::Future;
 use std::io;
+use std::marker::PhantomPinned;
 use std::pin::Pin;
 use std::task::{Context, Poll};
 
-cfg_io_util! {
+pin_project! {
     /// A future to write some of the buffer to an `AsyncWrite`.
     #[derive(Debug)]
     #[must_use = "futures do nothing unless you `.await` or poll them"]
     pub struct Write<'a, W: ?Sized> {
         writer: &'a mut W,
         buf: &'a [u8],
+        // Make this future `!Unpin` for compatibility with async trait methods.
+        #[pin]
+        _pin: PhantomPinned,
     }
 }
 
@@ -21,7 +26,11 @@ pub(crate) fn write<'a, W>(writer: &'a mut W, buf: &'a [u8]) -> Write<'a, W>
 where
     W: AsyncWrite + Unpin + ?Sized,
 {
-    Write { writer, buf }
+    Write {
+        writer,
+        buf,
+        _pin: PhantomPinned,
+    }
 }
 
 impl<W> Future for Write<'_, W>
@@ -30,8 +39,8 @@ where
 {
     type Output = io::Result<usize>;
 
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<usize>> {
-        let me = &mut *self;
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<usize>> {
+        let me = self.project();
         Pin::new(&mut *me.writer).poll_write(cx, me.buf)
     }
 }