Change feature name from 'serde' to 'serde-1'.

src/array_string.rs

@@ -14,7 +14,7 @@ use array::Index;
 use CapacityError;
 use odds::char::encode_utf8;
 
-#[cfg(feature="serde")]
+#[cfg(feature="serde-1")]
 use serde::{Serialize, Deserialize, Serializer, Deserializer};
 
 /// A string with a fixed capacity.
@@ -328,7 +328,7 @@ impl<A: Array<Item=u8>> Ord for ArrayString<A> {
     }
 }
 
-#[cfg(feature="serde")]
+#[cfg(feature="serde-1")]
 impl<A: Array<Item=u8>> Serialize for ArrayString<A> {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
         where S: Serializer
@@ -337,7 +337,7 @@ impl<A: Array<Item=u8>> Serialize for ArrayString<A> {
     }
 }
 
-#[cfg(feature="serde")]
+#[cfg(feature="serde-1")]
 impl<'de, A: Array<Item=u8>> Deserialize<'de> for ArrayString<A> {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where D: Deserializer<'de>