Replace channel based barrier with shared future based barrier

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 6407236..70f03dd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,6 @@
 #![recursion_limit="128"]
 #![feature(option_replace)]
+#![feature(associated_type_defaults)]
 extern crate futures;
 extern crate reqwest;
 extern crate serde;