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-rw-r--r--compiler/rustc_mir/src/lib.rs5
1 files changed, 2 insertions, 3 deletions
diff --git a/compiler/rustc_mir/src/lib.rs b/compiler/rustc_mir/src/lib.rs
index 03e6f8414b9..a356ae1709d 100644
--- a/compiler/rustc_mir/src/lib.rs
+++ b/compiler/rustc_mir/src/lib.rs
@@ -6,6 +6,7 @@ Rust MIR: a lowered representation of Rust.
 
 #![feature(nll)]
 #![feature(in_band_lifetimes)]
+#![feature(array_windows)]
 #![feature(bindings_after_at)]
 #![feature(bool_to_option)]
 #![feature(box_patterns)]
@@ -14,20 +15,18 @@ Rust MIR: a lowered representation of Rust.
 #![feature(const_panic)]
 #![feature(crate_visibility_modifier)]
 #![feature(decl_macro)]
-#![feature(drain_filter)]
 #![feature(exact_size_is_empty)]
 #![feature(exhaustive_patterns)]
-#![feature(iter_order_by)]
 #![feature(never_type)]
 #![feature(min_specialization)]
 #![feature(trusted_len)]
 #![feature(try_blocks)]
-#![feature(associated_type_bounds)]
 #![feature(associated_type_defaults)]
 #![feature(stmt_expr_attributes)]
 #![feature(trait_alias)]
 #![feature(option_expect_none)]
 #![feature(or_patterns)]
+#![feature(once_cell)]
 #![recursion_limit = "256"]
 
 #[macro_use]