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-rw-r--r--src/libcore/tests/lib.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/libcore/tests/lib.rs b/src/libcore/tests/lib.rs
index 505f8b0a261..a3b108b2e9c 100644
--- a/src/libcore/tests/lib.rs
+++ b/src/libcore/tests/lib.rs
@@ -32,7 +32,6 @@
 #![feature(const_fn)]
 #![feature(iter_partition_in_place)]
 #![feature(iter_is_partitioned)]
-#![warn(rust_2018_idioms)]
 
 extern crate test;