diff --git a/Cargo.toml b/Cargo.toml
index 480479c..323c24a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "cpal"
-version = "0.0.6-pre"
+version = "0.0.7-pre"
 authors = ["Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform audio playing library in pure Rust."
 repository = "https://github.com/tomaka/cpal"
@@ -10,11 +10,11 @@ license = "Apache-2.0"
 keywords = ["audio", "sound"]
 
 [target.i686-pc-windows-gnu.dependencies.winapi]
-version = "^0.0.3"
+version = "0"
 features = ["ole32"]
 
 [target.x86_64-pc-windows-gnu.dependencies.winapi]
-version = "^0.0.3"
+version = "0"
 features = ["ole32"]
 
 [target.i686-unknown-linux-gnu.dependencies.alsa-sys]
@@ -26,4 +26,4 @@ version = "^0.0.1"
 path = "alsa-sys"
 
 [dev-dependencies]
-vorbis = "^0.0.1"
+vorbis = "0"
diff --git a/src/lib.rs b/src/lib.rs
index cc9360d..20a1dc9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -47,6 +47,7 @@ a conversion on your data.
 If you have the possibility, you should try to match the format of the voice.
 
 */
+#![feature(associated_types)]
 #![feature(macro_rules)]
 #![feature(unsafe_destructor)]
 #![unstable]
@@ -56,6 +57,8 @@ use this_platform_is_not_supported;
 
 pub use samples_formats::{SampleFormat, Sample};
 
+use std::ops::{Deref, DerefMut};
+
 mod conversions;
 mod samples_formats;
 
@@ -84,7 +87,7 @@ pub struct Voice(cpal_impl::Voice);
 pub type ChannelsCount = u16;
 
 /// 
-#[deriving(Show, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Show, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub struct SamplesRate(pub u32);
 
 /// Represents a buffer that must be filled with audio data.
@@ -199,7 +202,8 @@ impl Voice {
             let intermediate_buffer_length = intermediate_buffer_length *
                                              source_samples_format.get_sample_size() /
                                              target_samples_format.get_sample_size();
-            let intermediate_buffer = Vec::from_elem(intermediate_buffer_length, unsafe { std::mem::uninitialized() });
+            let intermediate_buffer = std::iter::repeat(unsafe { std::mem::uninitialized() })
+                                        .take(intermediate_buffer_length).collect();
 
             Buffer {
                 target: Some(target_buffer),
@@ -241,13 +245,15 @@ impl Voice {
     }
 }
 
-impl<'a, T> Deref<[T]> for Buffer<'a, T> {
+impl<'a, T> Deref for Buffer<'a, T> {
+    type Target = [T];
+
     fn deref(&self) -> &[T] {
         panic!("It is forbidden to read from the audio buffer");
     }
 }
 
-impl<'a, T> DerefMut<[T]> for Buffer<'a, T> {
+impl<'a, T> DerefMut for Buffer<'a, T> {
     fn deref_mut(&mut self) -> &mut [T] {
         if let Some(ref mut conversion) = self.conversion {
             conversion.intermediate_buffer.as_mut_slice()
diff --git a/src/samples_formats.rs b/src/samples_formats.rs
index 8a409ff..98c856e 100644
--- a/src/samples_formats.rs
+++ b/src/samples_formats.rs
@@ -2,7 +2,7 @@ use std::borrow::Cow;
 use std::mem;
 
 /// Format that each sample has.
-#[deriving(Clone, Copy, Show, PartialEq, Eq)]
+#[derive(Clone, Copy, Show, PartialEq, Eq)]
 pub enum SampleFormat {
     /// The value 0 corresponds to 0.
     I16,