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-rw-r--r--components/util/lib.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/components/util/lib.rs b/components/util/lib.rs
index 4eaf40b465f..1f90cafd091 100644
--- a/components/util/lib.rs
+++ b/components/util/lib.rs
@@ -10,7 +10,6 @@
#![feature(hash)]
#![feature(int_uint)]
#![feature(io)]
-#![feature(old_io)]
#![feature(optin_builtin_traits)]
#![feature(path)]
#![cfg_attr(not(target_os = "android"), feature(path_ext))]