From cca502ab4d9b1aa130ec5206b7230f80bbab3ff4 Mon Sep 17 00:00:00 2001
From: Till Rohrmann <till@restate.dev>
Date: Thu, 19 Mar 2026 11:55:28 +0100
Subject: [PATCH] Use WarpBuild runners for CI workflows

Migrate CI and integration workflows to warp-ubuntu-latest-x64-4x.
In ci.yml, disable the built-in Swatinem/rust-cache from
setup-rust-toolchain and add explicit WarpBuilds/rust-cache for
WarpBuild-optimized caching. Update Docker Buildx setup with
network=host driver-opts and point Docker layer cache at WarpBuild's
cache proxy. CLA workflow is left on GitHub-hosted runners.
---
 .github/workflows/ci.yml           | 8 +++++++-
 .github/workflows/integration.yaml | 9 ++++++---
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fe0400b..845d48a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04]
+        os: [warp-ubuntu-latest-x64-4x]
     env:
       RUST_BACKTRACE: full
     steps:
@@ -30,6 +30,12 @@ jobs:
         with:
           components: clippy
           rustflags: ""
+          cache: false
+
+      - name: Setup Rust Caching
+        uses: WarpBuilds/rust-cache@v2
+        with:
+          cache-on-failure: "true"
 
       - name: Install nextest
         uses: taiki-e/install-action@nextest
diff --git a/.github/workflows/integration.yaml b/.github/workflows/integration.yaml
index b400676..420223a 100644
--- a/.github/workflows/integration.yaml
+++ b/.github/workflows/integration.yaml
@@ -36,7 +36,7 @@ on:
 jobs:
   sdk-test-suite:
     if: github.repository_owner == 'restatedev'
-    runs-on: ubuntu-latest
+    runs-on: warp-ubuntu-latest-x64-4x
     name: Features integration test
     permissions:
       contents: read
@@ -91,6 +91,9 @@ jobs:
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          driver-opts: |
+            network=host
 
       - name: Build Rust test-services image
         id: build
@@ -101,8 +104,8 @@ jobs:
           push: false
           load: true
           tags: restatedev/rust-test-services
-          cache-from: type=gha,scope=${{ github.workflow }}
-          cache-to: type=gha,mode=max,scope=${{ github.workflow }}
+          cache-from: type=gha,url=http://127.0.0.1:49160/,version=1,scope=${{ github.workflow }}
+          cache-to: type=gha,url=http://127.0.0.1:49160/,mode=max,version=1,scope=${{ github.workflow }}
 
       - name: Run test tool
         uses: restatedev/sdk-test-suite@v3.4