Update rust.yml

.github/workflows/rust.yml

@@ -1,15 +1,53 @@
 name: Rust
 
-on: [push]
+on:
+  push:
+  release:
+    types: [created]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
 
 jobs:
   build:
-
-    runs-on: ubuntu-latest
+    name: Build Rust with Cargo
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        rust: [stable, nightly]
+    runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
+    - name: Setup Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ matrix.rust }}
+        override: true
     - name: Build
       run: cargo build --verbose
+    - name: Build examples
+      run: cargo build --examples --verbose
     - name: Run tests
       run: cargo test --verbose
+
+  build_success:
+    name: Build Rust with Cargo - All environments
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+    - run: echo Done!
+
+  publish:
+    name: Publish tagged release on crates.io
+    if: github.event_name == 'release' && github.event.action == 'created'
+    needs:
+      - build_success
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: katyo/publish-crates@v1
+      with:
+          registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}