diff --git a/src/lib.rs b/src/lib.rs
index 94f1c8a03..41185bbc5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,8 +3,6 @@
 #![feature(generators)]
 #![feature(try_trait)]
 #![feature(bind_by_move_pattern_guards)]
-#![feature(box_syntax)]
-#![feature(type_ascription)]
 #![feature(core_intrinsics)]
 #![feature(option_flattening)]
 #![feature(specialization)]
diff --git a/src/main.rs b/src/main.rs
index 9c834fcf5..882caaa6a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,3 @@
-#![feature(crate_visibility_modifier)]
-#![feature(in_band_lifetimes)]
-#![feature(try_trait)]
-#![feature(bind_by_move_pattern_guards)]
-
 use clap::{App, Arg};
 use log::LevelFilter;
 use std::error::Error;