Update to serde 0.9

Author: SimonSapin

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "cssparser"
-version = "0.7.4"
+version = "0.8.0"
 authors = [ "Simon Sapin <simon.sapin@exyr.org>" ]
 
 description = "Rust implementation of CSS Syntax Level 3"
@@ -22,7 +22,7 @@ tempdir = "0.3"
 encoding = "0.2"
 heapsize = {version = ">=0.1.1, <0.4.0", optional = true}
 matches = "0.1"
-serde = {version = ">=0.6.6, <0.9", optional = true}
+serde = {version = "0.9", optional = true}
 
 [build-dependencies]
 syn = { version = "0.10.6", features = ["full", "visit"]}

src/color.rs

@@ -24,20 +24,15 @@ pub struct RGBA {
 
 #[cfg(feature = "serde")]
 impl Serialize for RGBA {
-    fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
-        where S: Serializer
-    {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
         (self.red, self.green, self.blue, self.alpha).serialize(serializer)
     }
 }
 
 #[cfg(feature = "serde")]
 impl Deserialize for RGBA {
-    fn deserialize<D>(deserializer: &mut D) -> Result<Self, D::Error>
-        where D: Deserializer
-    {
-        let (red, green, blue, alpha) =
-            try!(Deserialize::deserialize(deserializer));
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer {
+        let (red, green, blue, alpha) = Deserialize::deserialize(deserializer)?;
         Ok(RGBA {
             red: red,
             green: green,