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-rw-r--r--compiler/rustc_ast/src/lib.rs3
1 files changed, 0 insertions, 3 deletions
diff --git a/compiler/rustc_ast/src/lib.rs b/compiler/rustc_ast/src/lib.rs
index 4fc7c7475d7..896d1e1148a 100644
--- a/compiler/rustc_ast/src/lib.rs
+++ b/compiler/rustc_ast/src/lib.rs
@@ -16,10 +16,7 @@
 #![feature(box_patterns)]
 #![feature(if_let_guard)]
 #![feature(macro_metavar_expr)]
-#![feature(negative_impls)]
-#![feature(never_type)]
 #![feature(rustdoc_internals)]
-#![feature(stmt_expr_attributes)]
 #![recursion_limit = "256"]
 // tidy-alphabetical-end