Add a cargo test step to the rust gha

PiperOrigin-RevId: 673955655

.github/workflows/test_rust.yml

@@ -32,3 +32,11 @@ jobs:
             //rust:protobuf_upb_test //rust:protobuf_cpp_test
             //rust/test/rust_proto_library_unit_test:rust_upb_aspect_test
             //src/google/protobuf/compiler/rust/...
+      - name: Run Cargo tests
+        uses: protocolbuffers/protobuf-ci/bazel-docker@v3
+        with:
+          image: "us-docker.pkg.dev/protobuf-build/containers/release/linux/rust:6.3.0-1.74.0-8858126dd9480abf91e6ce8d6e41a5cd3c03882c"
+          credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
+          bazel-cache: rust_linux
+          bazel: >-
+            run //rust:cargo_test

rust/cargo_test.sh

@@ -28,10 +28,17 @@ fi
 
 TMP_DIR=$(mktemp -d)
 trap 'rm -rf -- "$TMP_DIR"' EXIT
-CRATE=$(rlocation com_google_protobuf/rust/rust_crate.zip)
 
-unzip -d $TMP_DIR $CRATE
-cd $TMP_DIR
+CARGO_HOME=$TMP_DIR/cargo_home
+mkdir $CARGO_HOME
+
+CRATE_ROOT=$TMP_DIR/protobuf
+mkdir $CRATE_ROOT
+
+CRATE_ZIP=$(rlocation com_google_protobuf/rust/rust_crate.zip)
+
+unzip -d $CRATE_ROOT $CRATE_ZIP
+cd $CRATE_ROOT
 
 # Run all tests except doctests
-cargo test --lib --bins --tests
+CARGO_HOME=$CARGO_HOME cargo test --lib --bins --tests