From 21f1b7decf5dd668975f263d9a07ae345f7e6556 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Mon, 5 Jan 2026 15:23:44 -0800
Subject: [PATCH 1/3] Make the `std` feature inert

In more recent versions of Rust the `Error` trait no longer needs to be
gated, so use it through `core::error::Error` to remove the only usage
of the `feature = "std"` directive. The `std` feature is left for now to
avoid breaking downstream users (if any applicable) but should be
removable later.
---
 Cargo.toml | 3 ++-
 src/lib.rs | 6 +-----
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 010f8c03..5ed9c89d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,7 +40,8 @@ overflow-checks = true
 [features]
 default = ["std"]
 
-# Enables std-specific features such as the Error trait for RegAllocError.
+# Currently does nothing, but historically enabled some `std` features such as
+# the `Error` trait.
 std = []
 
 # Enables generation of DefAlloc edits for the checker.
diff --git a/src/lib.rs b/src/lib.rs
index 1f2d3276..1be7555d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,9 +14,6 @@
 #![allow(clippy::all)]
 #![no_std]
 
-#[cfg(feature = "std")]
-extern crate std;
-
 extern crate alloc;
 
 // Even when trace logging is disabled, the trace macro has a significant
@@ -1627,8 +1624,7 @@ impl core::fmt::Display for RegAllocError {
     }
 }
 
-#[cfg(feature = "std")]
-impl std::error::Error for RegAllocError {}
+impl core::error::Error for RegAllocError {}
 
 /// Run the allocator.
 pub fn run<F: Function>(

From 37f6b0281310d3cf3b46ffb278ce8db4afbe5323 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Mon, 5 Jan 2026 15:34:37 -0800
Subject: [PATCH 2/3] Fix fuzzing build

---
 src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 1be7555d..30a4bcc8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,6 +14,9 @@
 #![allow(clippy::all)]
 #![no_std]
 
+#[cfg(feature = "fuzzing")]
+extern crate std;
+
 extern crate alloc;
 
 // Even when trace logging is disabled, the trace macro has a significant

From c88d09d7f1b243115f93cc5950fbd991efd81ed1 Mon Sep 17 00:00:00 2001
From: Chris Fallin <chris@cfallin.org>
Date: Tue, 6 Jan 2026 05:55:12 -0800
Subject: [PATCH 3/3] Fix cargo-deny CI job

---
 .github/workflows/rust.yml | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 13498626..b9f8c519 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -56,11 +56,7 @@ jobs:
     - uses: actions/checkout@v3
       with:
         submodules: true
-    - run: |
-        set -e
-        curl -L https://github.com/EmbarkStudios/cargo-deny/releases/download/0.14.22/cargo-deny-0.14.22-x86_64-unknown-linux-musl.tar.gz | tar xzf -
-        mv cargo-deny-*-x86_64-unknown-linux-musl/cargo-deny cargo-deny
-        echo `pwd` >> $GITHUB_PATH
+    - run: cargo install cargo-deny
     - run: cargo deny check
 
   # Builds the fuzz targets.