ci: run no-alloc hot-path tests as separate job

.github/workflows/ci.yml

@@ -35,8 +35,8 @@ jobs:
     - name: Run clippy
       run: cargo clippy --lib --bins --tests --benches --all-features -- -D warnings && cargo clippy --example benchmark_with_keepalive --example demo --example final_benchmark --example http2_tuning_benchmark --example performance_benchmark --example quick_demo --example snipe -- -D warnings
 
-    - name: Run tests
+    - name: Run tests (excluding no-alloc hot paths)
-      run: cargo test --all-features
+      run: cargo test --all-features -- --skip no_alloc_
 
     - name: Build examples
       run: |
@@ -65,3 +65,23 @@ jobs:
 
     - name: Run security audit
       run: cargo audit
+
+  no_alloc:
+    name: No-alloc hot paths
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: dtolnay/rust-toolchain@stable
+
+    - name: Cache dependencies
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          target
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Run no-alloc hot path tests
+      run: cargo test --all-features --test no_alloc_hot_paths