ci: update github actions

- move clippy and fmt to another thread
- add os to matrix

.github/workflows/build.yml

@@ -0,0 +1,98 @@
+name: CI
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macos-latest
+        rust:
+          - stable
+          - beta
+          - nightly
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+          components: rustfmt, clippy
+
+      - name: Cache cargo registry
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('Cargo.lock') }}
+      - name: Cache cargo index
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('Cargo.lock') }}
+
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+
+      - uses: isbang/compose-action@v0.1
+
+      - name: Run tests
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: -- --test-threads=1
+
+  clippy:
+    name: clippy (ubuntu-latest, stable)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Instal latest stable
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          components: clippy
+      - name: Cache cargo registry
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('Cargo.lock') }}
+      - name: Cache cargo index
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('Cargo.lock') }}
+      - name: Cache cargo build
+        uses: actions/cache@v1
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('Cargo.lock') }}
+      - name: Check clippy
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings
+
+  fmt:
+    name: fmt (ubuntu-latest, stable)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Instal latest stable
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          components: rustfmt
+      - name: Check format
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check

.github/workflows/rust.yml

@@ -1,52 +0,0 @@
-name: CI
-
-on: [push, pull_request]
-
-env:
-  CARGO_TERM_COLOR: always
-
-jobs:
-  ci:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - stable
-          - beta
-          - nightly
-          - 1.50.0 # MSRV
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt, clippy
-
-      - name: Build
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-
-      - name: Check format
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
-
-      - name: Check clippy
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: -- -D warnings
-
-      - uses: isbang/compose-action@v0.1
-
-      - name: Run tests
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: -- --test-threads=1