uiautomator刚开始学，同样jar，上午可以运行，下午就执行不了了

uiautomator 1.0+eclipse刚开始学习，同样jar，上午还可以运行，下午就执行不了了，很奇怪啊
如下：
Warning: This version of UI Automator is deprecated. New tests should be written using UI Automator 2.0 which is available as part of the Android Testing Support Library.
然后就。。。
FAILURES!!!
Tests run: 1, Failures: 0, Errors: 1
INSTRUMENTATION_STATUS_CODE: -1
测试手机：Pixel_android 8.0.0
谁能告诉我一下为啥？或者说哪些原因有可能造成这个问题?