Pin cross to 0.2.1

Author: taiki-e

.github/workflows/ci.yml

@@ -66,7 +66,10 @@ jobs:
     - name: Install Rust
       run: rustup update stable
     - name: Install cross
-      uses: taiki-e/install-action@cross
+      uses: taiki-e/install-action@v1
+      with:
+        # https://github.com/cross-rs/cross/issues/724
+        tool: [email protected]
     - name: Android
       if: startsWith(matrix.os, 'ubuntu')
       run: cross test --target arm-linux-androideabi