From 1e2296e090170c9301010425bafc2be0f2567181 Mon Sep 17 00:00:00 2001
From: boleklebovski <160799963+boleklebovski@users.noreply.github.com>
Date: Wed, 5 Aug 2026 02:07:00 +0200
Subject: [PATCH] ci: replace archived actions-rs/toolchain, bump
 checkout/cache

actions-rs has been archived since 2022 and runs on the removed Node 12
runtime. Move the four Rust workflows to dtolnay/rust-toolchain and bring
the two stragglers in line with the checkout@v4 / cache@v4 used elsewhere.
---
 .github/workflows/build-and-test-rust.yml | 8 +++-----
 .github/workflows/lint-contracts.yml      | 2 +-
 .github/workflows/test-merkle-tree.yml    | 4 +---
 .github/workflows/test-risc-zero.yml      | 4 +---
 .github/workflows/test-sp1.yml            | 4 +---
 5 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/.github/workflows/build-and-test-rust.yml b/.github/workflows/build-and-test-rust.yml
index be0f8f3a10..07beb3a56f 100644
--- a/.github/workflows/build-and-test-rust.yml
+++ b/.github/workflows/build-and-test-rust.yml
@@ -20,11 +20,9 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Rust
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@1.88.0
         with:
-          toolchain: 1.88.0
           components: rustfmt, clippy
-          override: true
 
       # Reference: https://github.com/succinctlabs/sp1/actions/runs/8886659400/workflow#L61-L65
       - name: Install sp1 toolchain
@@ -40,7 +38,7 @@ jobs:
           ~/.risc0/bin/rzup install
 
       - name: Cache Rust dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
@@ -106,7 +104,7 @@ jobs:
           ~/.risc0/bin/rzup install
 
       - name: Cache Rust dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/registry
diff --git a/.github/workflows/lint-contracts.yml b/.github/workflows/lint-contracts.yml
index 49aafc2c91..b3a3a3b643 100644
--- a/.github/workflows/lint-contracts.yml
+++ b/.github/workflows/lint-contracts.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Node.js
         uses: actions/setup-node@v4
diff --git a/.github/workflows/test-merkle-tree.yml b/.github/workflows/test-merkle-tree.yml
index 098c6903bd..9791034879 100644
--- a/.github/workflows/test-merkle-tree.yml
+++ b/.github/workflows/test-merkle-tree.yml
@@ -29,9 +29,7 @@ jobs:
           with:
             go-version: '1.22'
             cache: false
-        - uses: actions-rs/toolchain@v1
-          with:
-            toolchain: stable
+        - uses: dtolnay/rust-toolchain@stable
         - name: Test Merkle Tree Rust
           run: make test_merkle_tree_rust_ffi
         - name: Test Merkle Tree go bindings
diff --git a/.github/workflows/test-risc-zero.yml b/.github/workflows/test-risc-zero.yml
index b74b71d654..ac2dc9f428 100644
--- a/.github/workflows/test-risc-zero.yml
+++ b/.github/workflows/test-risc-zero.yml
@@ -29,9 +29,7 @@ jobs:
         with:
           go-version: "1.23"
           cache: false
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
+      - uses: dtolnay/rust-toolchain@stable
       - name: Test Risc Zero Rust
         run: make test_risc_zero_rust_ffi
       - name: Test Risc Zero go bindings
diff --git a/.github/workflows/test-sp1.yml b/.github/workflows/test-sp1.yml
index 1ad763c9bf..34df22c08a 100644
--- a/.github/workflows/test-sp1.yml
+++ b/.github/workflows/test-sp1.yml
@@ -20,9 +20,7 @@ jobs:
           with:
             go-version: '1.22'
             cache: false
-        - uses: actions-rs/toolchain@v1
-          with:
-            toolchain: stable
+        - uses: dtolnay/rust-toolchain@stable
         - name: Test SP1 Rust
           run: make test_sp1_rust_ffi
         - name: Test SP1 go bindings