[CI] Use --all-targets with cargo check

Ensures that examples, benchmarks, etc. are also checked.

Fixes #95.

Author: jswrenn

.github/workflows/ci.yml

@@ -122,7 +122,7 @@ jobs:
         key: "${{ env.ZC_TOOLCHAIN }}-${{ matrix.target }}-${{ env.FEATURES_HASH }}-${{ hashFiles('**/Cargo.lock') }}"
 
     - name: Check
-      run: cargo +${{ env.ZC_TOOLCHAIN }} check --manifest-path ${{ matrix.manifest-path }} --target ${{ matrix.target }} --features "${{ matrix.features }}" --verbose
+      run: cargo +${{ env.ZC_TOOLCHAIN }} check --manifest-path ${{ matrix.manifest-path }} --target ${{ matrix.target }} --features "${{ matrix.features }}" --verbose --all-targets
 
     - name: Build
       run: cargo +${{ env.ZC_TOOLCHAIN }} build --manifest-path ${{ matrix.manifest-path }} --target ${{ matrix.target }} --features "${{ matrix.features }}" --verbose