1 files changed, 1 insertions, 1 deletions
diff --git a/library/std/src/sys/unsupported/pipe.rs b/library/std/src/sys/unsupported/pipe.rs
index 75ce7546796..0bba673b458 100644
--- a/library/std/src/sys/unsupported/pipe.rs
+++ b/library/std/src/sys/unsupported/pipe.rs
@@ -15,7 +15,7 @@ impl AnonPipe {
         self.0
     }
 
-    pub fn read_to_end(&self, buf: &mut Vec<u8>) -> io::Result<usize> {
+    pub fn read_to_end(&self, _buf: &mut Vec<u8>) -> io::Result<usize> {
         self.0
     }