diff --git a/src/config.rs b/src/config.rs
index f14b0b37..59ae8ad0 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -206,7 +206,9 @@ impl Config {
         } else if index.starts_with("build.") {
             self.build.update_value(&index[6..], value);
         } else {
-            self.rest.insert(index, value).map_err(|e| ErrorKind::TomlQueryError(e))?;
+            self.rest
+                .insert(index, value)
+                .map_err(|e| ErrorKind::TomlQueryError(e))?;
         }
 
         Ok(())