Use actions-rust-lang/setup-rust-toolchain

Pinned to v1.12.0’s commit hash,
9d7e65c320fdb52dcd45ffaa68deb6c02c8754d9

Author: onethumb

.github/workflows/tests.yml

@@ -16,24 +16,13 @@ jobs:
           - "nightly"
     steps:
       - uses: actions/checkout@v4 # not pinning to commit hash since this is a GitHub action, which we trust
-      - id: cache-cargo
-        name: Cache Cargo toolchain
-        uses: actions/cache@v4 # not pinning to commit hash since this is a GitHub action, which we trust
+      - uses: actions-rust-lang/setup-rust-toolchain@9d7e65c320fdb52dcd45ffaa68deb6c02c8754d9 # v1.12.0
         with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}-release
-      - if: ${{ steps.cache-cargo.outputs.cache-hit != 'true' }}
-        name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1 # not pinning to commit hash since this is an archived GitHub action, which we trust
-        with:
-          profile: minimal
           toolchain: ${{ matrix.rust-toolchain }}
-          override: true
+          profile: minimal
+          components: rustfmt, clippy
+      - name: Check
+        run: cargo check
       - name: Architecture check
         run: cargo run arch-check
       - name: Architecture check (Optimized)