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-rw-r--r--src/librustc/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/librustc/lib.rs b/src/librustc/lib.rs
index 44f23c11b04..075ee0b8c7c 100644
--- a/src/librustc/lib.rs
+++ b/src/librustc/lib.rs
@@ -48,6 +48,7 @@
 #![feature(drain_filter)]
 #![feature(dyn_trait)]
 #![feature(from_ref)]
+#![feature(fs_read_write)]
 #![feature(i128)]
 #![feature(i128_type)]
 #![feature(inclusive_range)]