在圆ci中找不到com.android.tools.build:gradle:3.0.0

Question

我将gradle插件更新到最新版本：com.android.tools.build:gradle:3.0.0-alpha1 并发生了此错误：

export TERM="dumb"

if [ -e ./gradlew ]; then ./gradlew test;else gradle test;fi

FAILURE: Build failed with an exception.

What went wrong:

    A problem occurred configuring root project 'Android-app'. Could not

 resolve all dependencies for configuration ':classpath'. Could not

 find com.android.tools.build:gradle:3.0.0-alpha1. Searched in the

 following locations:

 https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0-alpha1/gradle-3.0.0-alpha1.pom

 https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0-alpha1/gradle-3.0.0-alpha1.jar

 Required by:

当前circle.yml

dependencies:

   pre:

      - mkdir -p $ANDROID_HOME"/licenses"

      - echo $ANDROID_SDK_LICENSE > $ANDROID_HOME"/licenses/android-sdk-license"

      - source environmentSetup.sh && get_android_sdk_25

   cache_directories:

    - /usr/local/android-sdk-linux

    - ~/.android

    - ~/.gradle

   override:

    - ./gradlew dependencies || true

test:

  post:

    - mkdir -p $CIRCLE_TEST_REPORTS/junit/

    - find . -type f -regex ".*/target/surefire-reports/.*xml" -exec cp {} $CIRCLE_TEST_REPORTS/junit/ \;

machine:

    java:

        version: oraclejdk8

编辑：我的gradle文件：

buildscript {

  repositories {

    jcenter()

    maven {

      url 'https://maven.google.com'

    }

  }

  dependencies {

    classpath 'com.android.tools.build:gradle:3.0.0-alpha1'

    classpath 'com.google.gms:google-services:3.0.0'

    classpath "io.realm:realm-gradle-plugin:3.1.3"

  }

}

allprojects {

  repositories {

    mavenCentral()

    jcenter()

  }

}

task clean(type: Delete) {

  delete rootProject.buildDir

}