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-rw-r--r--src/libstd/json.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/libstd/json.rs b/src/libstd/json.rs
index 13b58c43300..99c6c2f008d 100644
--- a/src/libstd/json.rs
+++ b/src/libstd/json.rs
@@ -10,7 +10,6 @@
 
 // Rust JSON serialization library
 // Copyright (c) 2011 Google Inc.
-#[forbid(deprecated_mode)];
 #[forbid(non_camel_case_types)];
 
 //! json serialization