Split out cargo bench compile check (#753)

Acknowledged that running "cargo bench --no-run" on every test platform
is slow. This PR
- extracts benchmark compilation verification from the Linux and macOS
build_and_test jobs into a dedicated `check-bench-compiles` job so it
runs in parallel with the cargo test jobs;
- also skips compiling "git_xet" in release mode which itself doesn't
contain benchmarks and takes the longest to compile due to optimized
linking;
- also removes unused clippy component installs from Windows and macOS
toolchain setup.

See below that the `check-bench-compiles` job finishes faster than
`build_and_test-linux` and `build_and_test-win`, so it's not introducing
extra wait time.

.github/workflows/ci.yml

@@ -30,6 +30,16 @@ jobs:
       - uses: actions/checkout@v6
       - name: Machete
         uses: bnjbvr/cargo-machete@main
+  check-bench-compiles:
+    name: Check benchmarks compile
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@1.89.0
+      - uses: ./.github/actions/cache-rust-build
+      - name: Compile benchmarks
+        run: |
+          cargo bench --no-run --workspace --exclude git_xet
   build_and_test-linux:
     runs-on: ubuntu-latest
     steps:
@@ -55,9 +65,6 @@ jobs:
       - name: Build and Test hf_xet
         run: |
           cd hf_xet && cargo test --verbose --no-fail-fast
-      - name: Check benchmarks compile
-        run: |
-          cargo bench --no-run
       - name: Check Cargo.lock has no uncommitted changes
         run: |
           # the build and test steps would update Cargo.lock if it is out of date
@@ -69,8 +76,6 @@ jobs:
         uses: actions/checkout@v6
       - name: Install Rust 1.89
         uses: dtolnay/rust-toolchain@1.89.0
-        with:
-          components: clippy
       - uses: ./.github/actions/cache-rust-build
       - name: Build and Test
         run: |
@@ -85,8 +90,6 @@ jobs:
         uses: actions/checkout@v6
       - name: Install Rust 1.89
         uses: dtolnay/rust-toolchain@1.89.0
-        with:
-          components: clippy
       - name: Set up Git LFS
         run: |
           brew install git-lfs
@@ -98,9 +101,6 @@ jobs:
       - name: Build and Test hf_xet
         run: |
           cd hf_xet && cargo test --verbose --no-fail-fast
-      - name: Check benchmarks compile
-        run: |
-          cargo bench --no-run
   build_and_test-wasm:
     name: Build WASM
     runs-on: ubuntu-latest