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-rw-r--r--src/libstd/lib.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index a99fa016aef..03e90bf1089 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -112,7 +112,6 @@
 
 #![allow(deprecated)]
 #![deny(missing_doc)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 // When testing libstd, bring in libuv as the I/O backend so tests can print
 // things and all of the std::io tests have an I/O interface to run on top