Android Google Firebase Messaging

when build gradlew dependencies i got this error

This is my circle.yml

machine:
environment:

dependencies:
override:
- chmod +x gradlew
- ./gradlew dependencies

test:
override:
- ./gradlew clean assembleDebug -PdisablePreDex
- ./gradlew test -PdisablePreDex
- emulator -avd circleci-android21 -no-audio -no-window:
background: true
parallel: true
- circle-android wait-for-boot
- adb shell input keyevent 82
- ./gradlew connectedDebugAndroidTest
- cp -r app/build/outputs/androidTest-results $CIRCLE_TEST_REPORTS
- cp -r app/build/outputs $CIRCLE_ARTIFACTS
- cp -r app/build/test-results $CIRCLE_TEST_REPORTS
- cp -r app/build/reports $CIRCLE_TEST_REPORTS

Can you help me what should I do in order to successfully build my project.