diff --git a/src/main.rs b/src/main.rs
index b0ab6c0..28b3811 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -29,10 +29,9 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #![cfg_attr(test, feature(test))]
-#![feature(alloc, box_syntax, conservative_impl_trait, plugin, proc_macro)]
+#![feature(conservative_impl_trait, plugin, proc_macro)]
 #![plugin(clippy)]
 
-extern crate alloc;
 extern crate byteorder;
 extern crate core;
 #[macro_use] extern crate chan;
diff --git a/src/mp4.rs b/src/mp4.rs
index 0058a0c..60fa38b 100644
--- a/src/mp4.rs
+++ b/src/mp4.rs
@@ -79,7 +79,6 @@
 extern crate byteorder;
 extern crate time;
 
-use alloc::raw_vec::RawVec;
 use byteorder::{BigEndian, ByteOrder, WriteBytesExt};
 use db;
 use dir;
@@ -366,7 +365,11 @@ impl Mp4Segment {
         let stsz_len = mem::size_of::<u32>() * s.frames as usize;
         let stss_len = mem::size_of::<u32>() * s.key_frames as usize;
         let len = stts_len + stsz_len + stss_len;
-        let mut buf = unsafe { RawVec::with_capacity(len).into_box() };
+        let mut buf = unsafe {
+            let mut v = Vec::with_capacity(len);
+            v.set_len(len);
+            v.into_boxed_slice()
+        };
         {
             let (stts, mut rest) = buf.split_at_mut(stts_len);
             let (stsz, stss) = rest.split_at_mut(stsz_len);