diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..895a423
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "1.74"
+components = ["rustfmt", "clippy", "llvm-tools"]
\ No newline at end of file
diff --git a/vmm/task/src/streaming.rs b/vmm/task/src/streaming.rs
index 0bff680..6ef9a9c 100644
--- a/vmm/task/src/streaming.rs
+++ b/vmm/task/src/streaming.rs
@@ -436,10 +436,12 @@ impl AsyncRead for StreamingStdin {
     }
 }
 
+type Permit = Box<dyn Future<Output = Result<OwnedPermit<Vec<u8>>, SendError<()>>> + Send>;
+
 pin_project_lite::pin_project! {
     pub struct StreamingOutput {
         sender: Sender<Vec<u8>>,
-        permit: Option<Pin<Box<dyn Future<Output = Result<OwnedPermit<Vec<u8>>, SendError<()>>> + Send>>>,
+        permit: Option<Pin<Permit>>,
     }
 }