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-rw-r--r--src/libcore/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index 0e21a3327fd..55c5e1e7971 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -103,6 +103,7 @@
 #![feature(untagged_unions)]
 #![feature(unwind_attributes)]
 #![feature(doc_alias)]
+#![feature(inner_deref)]
 
 #![cfg_attr(not(stage0), feature(mmx_target_feature))]
 #![cfg_attr(not(stage0), feature(tbm_target_feature))]