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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 21e279066e7..197536158be 100644
--- a/src/libcore/tests/lib.rs
+++ b/src/libcore/tests/lib.rs
@@ -4,7 +4,6 @@
 #![feature(cell_update)]
 #![feature(core_private_bignum)]
 #![feature(core_private_diy_float)]
-#![feature(debug_map_key_value)]
 #![feature(debug_non_exhaustive)]
 #![feature(dec2flt)]
 #![feature(exact_size_is_empty)]