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-rw-r--r--src/libserialize/lib.rs3
1 files changed, 0 insertions, 3 deletions
diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index 4eb2cad5c91..ca27b34d681 100644
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -28,15 +28,12 @@ Core encoding and decoding interfaces.
 #![deny(warnings)]
 
 #![feature(box_syntax)]
-#![feature(collections)]
 #![feature(core_intrinsics)]
 #![feature(i128_type)]
 #![feature(specialization)]
 #![cfg_attr(stage0, feature(staged_api))]
 #![cfg_attr(test, feature(test))]
 
-extern crate collections;
-
 pub use self::serialize::{Decoder, Encoder, Decodable, Encodable};
 
 pub use self::serialize::{SpecializationError, SpecializedEncoder, SpecializedDecoder};