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-rw-r--r--src/libcollections/lib.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/libcollections/lib.rs b/src/libcollections/lib.rs
index e32ee34887c..3a054096807 100644
--- a/src/libcollections/lib.rs
+++ b/src/libcollections/lib.rs
@@ -25,7 +25,6 @@
 #![doc(test(no_crate_inject))]
 
 #![allow(trivial_casts)]
-#![allow(trivial_numeric_casts)]
 #![feature(alloc)]
 #![feature(box_syntax)]
 #![feature(box_patterns)]