diff --git a/launcher/src/main.rs b/launcher/src/main.rs
index e170db2b..1317868c 100644
--- a/launcher/src/main.rs
+++ b/launcher/src/main.rs
@@ -115,7 +115,8 @@ fn main() -> ExitCode {
                     None => {
                         // try to default to the number of available GPUs
                         tracing::info!("Parsing num_shard from CUDA_VISIBLE_DEVICES");
-                        let n_devices = num_cuda_devices().expect("--num-shard and CUDA_VISIBLE_DEVICES are not set");
+                        let n_devices = num_cuda_devices()
+                            .expect("--num-shard and CUDA_VISIBLE_DEVICES are not set");
                         if n_devices <= 1 {
                             panic!("`sharded` is true but only found {n_devices} CUDA devices");
                         }
@@ -144,7 +145,7 @@ fn main() -> ExitCode {
         match num_shard {
             // get num_shard from CUDA_VISIBLE_DEVICES or default to a single shard
             None => num_cuda_devices().unwrap_or(1),
-            Some(num_shard) => num_shard
+            Some(num_shard) => num_shard,
         }
     };
     tracing::info!("Sharding model on {num_shard} processes");
@@ -155,7 +156,7 @@ fn main() -> ExitCode {
     ctrlc::set_handler(move || {
         r.store(false, Ordering::SeqCst);
     })
-        .expect("Error setting Ctrl-C handler");
+    .expect("Error setting Ctrl-C handler");
 
     // Check if model_id is a local model
     let local_path = Path::new(&model_id);
@@ -671,11 +672,10 @@ fn shutdown_shards(shutdown: Arc<Mutex<bool>>, shutdown_receiver: &mpsc::Receive
     let _ = shutdown_receiver.recv();
 }
 
-
 fn num_cuda_devices() -> Option<usize> {
     if let Ok(cuda_visible_devices) = env::var("CUDA_VISIBLE_DEVICES") {
-        let n_devices = cuda_visible_devices.split(",").count();
+        let n_devices = cuda_visible_devices.split(',').count();
         return Some(n_devices);
     }
     None
-}
\ No newline at end of file
+}