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-rw-r--r--src/liballoc/tests/lib.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/liballoc/tests/lib.rs b/src/liballoc/tests/lib.rs
index 5a43c8e09a2..6d774f3fecd 100644
--- a/src/liballoc/tests/lib.rs
+++ b/src/liballoc/tests/lib.rs
@@ -8,7 +8,6 @@
 #![feature(trusted_len)]
 #![feature(try_reserve)]
 #![feature(unboxed_closures)]
-#![deny(rust_2018_idioms)]
 
 use std::hash::{Hash, Hasher};
 use std::collections::hash_map::DefaultHasher;