Get everything to compile and fix some warnings

serde2/benches/bench_log.rs

@@ -1,8 +1,6 @@
-#![feature(plugin, io)]
+#![feature(collections, core, io, plugin, test)]
 #![allow(non_camel_case_types)]
-
-#[plugin]
-extern crate serde2_macros;
+#![plugin(serde2_macros)]
 
 extern crate serde2;
 extern crate "rustc-serialize" as rustc_serialize;

serde2/src/de.rs

@@ -728,12 +728,17 @@ mod tests {
     enum Error {
         SyntaxError,
         EndOfStreamError,
+        MissingFieldError(&'static str),
     }
 
     impl super::Error for Error {
         fn syntax_error() -> Error { Error::SyntaxError }
 
         fn end_of_stream_error() -> Error { Error::EndOfStreamError }
+
+        fn missing_field_error(field: &'static str) -> Error {
+            Error::MissingFieldError(field)
+        }
     }
 
     impl<'a> Deserializer for TokenDeserializer<'a> {
@@ -1183,11 +1188,11 @@ mod tests {
 
         fn visit_enum<
             V: super::EnumVisitor,
-        >(&mut self, name: &str, variant: &str, mut visitor: V) -> Result<Enum, V::Error> {
+        >(&mut self, name: &str, variant: &str, visitor: V) -> Result<Enum, V::Error> {
             if name == "Enum" {
                 self.visit_variant(variant, visitor)
             } else {
-                Err(super::Error::syntax_error());
+                Err(super::Error::syntax_error())
             }
         }
 

serde2/src/json/error.rs

@@ -95,7 +95,7 @@ impl error::Error for Error {
     fn description(&self) -> &str {
         match *self {
             Error::SyntaxError(..) => "syntax error",
-            Error::IoError(ref error) => error.description().as_slice(),
+            Error::IoError(ref error) => error.description(),
             /*
             Error::ExpectedError(ref expected, _) => &expected,
             */

serde2/src/lib.rs

@@ -1,4 +1,4 @@
-#![feature(io)]
+#![feature(core, io, std_misc, unicode)]
 
 extern crate unicode;