diff --git a/candle-core/src/cuda_backend.rs b/candle-core/src/cuda_backend.rs
index 74a3cf30..934b90dd 100644
--- a/candle-core/src/cuda_backend.rs
+++ b/candle-core/src/cuda_backend.rs
@@ -106,7 +106,8 @@ trait WrapErr<O> {
 
 impl<O, E: Into<CudaError>> WrapErr<O> for std::result::Result<O, E> {
     fn w(self) -> std::result::Result<O, crate::Error> {
-        self.map_err(|e| crate::Error::Cuda(Box::new(e.into())))
+        self
+            .map_err(|e| crate::Error::Cuda(Box::new(e.into())))
     }
 }