From 5aa7d41bccf797306bb5df38857abd5ad3675a65 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Sun, 23 Aug 2026 19:45:37 +0000
Subject: [PATCH] build(ci): Build linux-arm64 on GitHub's native arm64 runners

The aarch64 build was the only entry in the matrix that needed `cross`,
and paying for it meant installing cargo-binstall and cross on every
run, ordered carefully around the cache restore so that binstall didn't
skip an install whose binary was never actually materialised.

GitHub now hosts arm64 Linux runners, so the target can simply be built
natively on `ubuntu-24.04-arm` with the same steps every other entry in
the matrix uses. With nothing left to switch on, the `builder` matrix
key goes too.

Co-Authored-By: Claude <noreply@anthropic.com>
---
 .github/workflows/rust.yml | 23 ++---------------------
 1 file changed, 2 insertions(+), 21 deletions(-)

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index f189a08..a6b921c 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -107,7 +107,6 @@ jobs:
             run_on: windows-latest
             target: x86_64-pc-windows-msvc
             extension: .exe
-            builder: cargo
 
           # Linux builds
           - arch: amd64
@@ -115,24 +114,20 @@ jobs:
             os: linux
             target: x86_64-unknown-linux-gnu
             test: true
-            builder: cargo
           - arch: "arm64"
             os: linux
-            run_on: ubuntu-latest
+            run_on: ubuntu-24.04-arm
             target: aarch64-unknown-linux-gnu
-            builder: cross
 
           # Apple MacOS builds
           - arch: amd64
             run_on: macos-latest
             os: darwin
             target: x86_64-apple-darwin
-            builder: cargo
           - arch: arm64
             run_on: macos-latest
             os: darwin
             target: aarch64-apple-darwin
-            builder: cargo
 
     steps:
       - name: Check out code
@@ -145,20 +140,6 @@ jobs:
           target: ${{ matrix.target }}
           components: llvm-tools-preview
 
-      # Install cross *before* Setup Cache. rust-cache restores cargo's
-      # install metadata (.crates2.json) but not the cargo bin directory,
-      # so if the cache runs first, binstall sees cross as "already
-      # installed", skips it, and the binary is never materialised. Running
-      # the install against a clean CARGO_HOME (with --force) guarantees the
-      # binary actually exists.
-      - name: Install Cross
-        if: matrix.builder == 'cross'
-        shell: bash
-        run: |
-          curl -L --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.sh | bash
-          cargo binstall --no-confirm --force cross
-          echo "${CARGO_HOME:-$HOME/.cargo}/bin" >> "$GITHUB_PATH"
-
       - name: Setup Cache
         uses: Swatinem/rust-cache@v2
         with:
@@ -170,7 +151,7 @@ jobs:
           name: cargofile
 
       - name: cargo build
-        run: ${{ matrix.builder }} build --release --target ${{ matrix.target }}
+        run: cargo build --release --target ${{ matrix.target }}
 
       - name: Upload GitHub Release Artifacts
         uses: SierraSoftworks/gh-releases@v1.0.10