Format with rustfmt 0.7.0
diff --git a/src/punctuated.rs b/src/punctuated.rs
index 8f4144f..a06abb5 100644
--- a/src/punctuated.rs
+++ b/src/punctuated.rs
@@ -762,8 +762,8 @@
 #[cfg(feature = "printing")]
 mod printing {
     use super::*;
-    use quote::{ToTokens, TokenStreamExt};
     use proc_macro2::TokenStream;
+    use quote::{ToTokens, TokenStreamExt};
 
     impl<T, P> ToTokens for Punctuated<T, P>
     where