From 8ad347eb366e48aec30e05f923f7cb0fffa6fe44 Mon Sep 17 00:00:00 2001
From: "Jason.Huang" <jason.huang@okg.com>
Date: Mon, 3 Jun 2024 17:54:43 +0800
Subject: [PATCH] remove #![feature(mutex_unlock)]
 https://github.com/rust-lang/rust/issues/81872

---
 plonky2/src/lib.rs  | 1 -
 rust-toolchain.toml | 5 +++++
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 rust-toolchain.toml

diff --git a/plonky2/src/lib.rs b/plonky2/src/lib.rs
index f47db8fe26..3bc266a9f5 100644
--- a/plonky2/src/lib.rs
+++ b/plonky2/src/lib.rs
@@ -3,7 +3,6 @@
 #![deny(rustdoc::broken_intra_doc_links)]
 #![deny(missing_debug_implementations)]
 #![cfg_attr(not(feature = "std"), no_std)]
-#![feature(mutex_unlock)]
 
 // #[cfg(not(feature = "std"))]
 pub extern crate alloc;
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000000..e0a216c974
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,5 @@
+[toolchain]
+channel = "nightly-2024-01-16"
+components = []
+targets = []
+profile = "default"