Tweak actions (#1305)

* Add benchmark action

* Fix Windows build

.github/workflows/bench.yml

@@ -0,0 +1,42 @@
+name: Benchmark (Linux)
+
+on: [push, pull_request]
+
+jobs:
+  check_benchmark:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@master
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with:
+          command: generate-lockfile
+      - name: Cache cargo registry
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/registry
+          key: ${{ matrix.version }}-x86_64-unknown-linux-gnu-registry-${{ hashFiles('**/Cargo.lock') }}
+      - name: Cache cargo index
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/git
+          key: ${{ matrix.version }}-x86_64-unknown-linux-gnu-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+      - name: Cache cargo build
+        uses: actions/cache@v1
+        with:
+          path: target
+          key: ${{ matrix.version }}-x86_64-unknown-linux-gnu-cargo-build-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Check benchmark
+        uses: actions-rs/cargo@v1
+        with:
+          command: bench