ignore protobuf-example in ci

.github/workflows/linux.yml

@@ -15,28 +15,27 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: ["stable", "nightly"]
+        version: ['stable', 'nightly']
+
+    env:
+      # included in example of redis, not clear its purpose
+      CI: true
 
     steps:
       - uses: actions/checkout@v2
 
-      - name: cache cargo artifacts
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            ./target/debug
-          key: cargo-linux-${{ matrix.version }}-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            cargo-linux-${{ matrix.version }}-
-
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
           toolchain: ${{ matrix.version }}
           override: true
 
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.2.0
+
       - name: create test db for sqlx
         run: |
           sudo apt-get update && sudo apt-get install sqlite3
@@ -50,7 +49,8 @@ jobs:
         timeout-minutes: 30
         with:
           command: check
-          args: --workspace --bins --examples --tests
+          # TODO: remove exclude protobuf-example when upgraded; currently fails on nightly
+          args: --workspace --bins --examples --tests --exclude protobuf-example
 
       - name: start redis
         uses: supercharge/redis-github-action@1.1.0
@@ -67,9 +67,7 @@ jobs:
       - name: cargo test
         uses: actions-rs/cargo@v1
         timeout-minutes: 30
-        env:
-          # included in example of redis, not clear its purpose
-          CI: true
         with:
           command: test
-          args: --workspace --all-features --no-fail-fast -- --nocapture
+          # TODO: remove exclude protobuf-example when upgraded; currently fails on nightly
+          args: --workspace --all-features --no-fail-fast --exclude protobuf-example -- --nocapture