Multiline attributes on enum variant fields are handled poorly

[Ms2ger]

 pub enum CoreResourceMsg {
     /// Store a cookie for a given originating URL
-    SetCookieForUrl(
-        ServoUrl,
-        #[serde(deserialize_with = "::hyper_serde::deserialize",
+    SetCookieForUrl(ServoUrl,
+                    #[serde(deserialize_with = "::hyper_serde::deserialize",
                 serialize_with = "::hyper_serde::serialize")]
-        Cookie,
-        CookieSource
-    ),
+                    Cookie,
+                    CookieSource),
 }

I would prefer for deserialize_with and serialize_with to remain aligned.

[Ms2ger]

servo/servo#8553