Build fail with Gradle when i enable network inspection.

[Folyd]

I use Android Studio 1.1.0 (stable),and my os is Mac OS X 10.10.

If i only enable default configuration i can build success,but i enable network inspection i always build fail.

I use Retrofit to request network data,and below is my code to enable network inspection.

        OkHttpClient client = new OkHttpClient();
        client.networkInterceptors().add(new StethoInterceptor());
        RestAdapter.Builder builder = new RestAdapter.Builder().setEndpoint(Api.BASE_URL)
                .setLogLevel(RestAdapter.LogLevel.FULL)
                .setRequestInterceptor(new RequestInterceptor() {
                    @Override
                    public void intercept(RequestFacade request) {
                        request.addQueryParam("hd", Api.hd);
                        request.addQueryParam("appver", Api.appver);
                        request.addQueryParam("platform", Api.platform);
                        request.addQueryParam("channel", Api.channel);

                        if (AccountManager.hasLogin()) {
                            request.addQueryParam("p", AccountManager.ticket);
                        }
                    }
                }).setConverter(new GsonConverter(gson)).setClient(new OkClient(client));

My build.gradle:
compile 'com.facebook.stetho:stetho:1.0.1'
compile 'com.facebook.stetho:stetho-okhttp:1.0.1'

Error:Execution failed for task ':my-project-name:dexDebug'.

com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2

[jasta]

I believe there is likely another error message being printed (the java finished with non-zero exit value 2 message is a red herring I think) further up that includes the real error.