Poco 脚本长时间运行后，poco调用java代码出错，报错：hrpc.exceptions.RpcRemoteException: java.lang.IndexOutOfBoundsException

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(重要！问题分类)

控件识别、树状结构、poco库报错

描述问题bug

编写的脚本任务是爬取评论，当脚本长时间执行的时候，airtest会报RpcRemoteException，短时间执行不会出错。

======================================================================
ERROR: runTest (app.widgets.code_runner.ide_launcher.AirtestIDECase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "airtest\cli\runner.py", line 65, in runTest
  File "site-packages\six.py", line 693, in reraise
  File "airtest\cli\runner.py", line 61, in runTest
  File "D:\airtest\airtestProject\vivoComment.air\vivoComment.py", line 40, in <module>
    if (mynode.offspring("com.bbk.appstore:id/comment_user").exists() and
  File "D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\poco\proxy.py", line 72, in wrapped
    return func(proxy, *args, **kwargs)
  File "D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\poco\proxy.py", line 774, in exists
    return self.attr('visible')
  File "D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\poco\proxy.py", line 39, in wrapped
    return func(self, *args, **kwargs)
  File "D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\poco\proxy.py", line 734, in attr
    nodes = self._do_query(multiple=False)
  File "D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\poco\proxy.py", line 872, in _do_query
    self._nodes = self.poco.agent.hierarchy.select(self.query, multiple)
  File "D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\poco\utils\retry.py", line 15, in wrapped
    return func(*args, **kwargs)
  File "D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\poco\utils\hrpc\hierarchy.py", line 33, in select
    return self.selector.select(query, multiple)
  File "hrpc\object_proxy.py", line 92, in __call__
  File "hrpc\client.py", line 81, in evaluate
hrpc.exceptions.RpcRemoteException: java.lang.IndexOutOfBoundsException: 

|--   Remote Traceback   --|

java.lang.IndexOutOfBoundsException
	at java.util.LinkedList.get(LinkedList.java:519)
	at com.netease.open.libpoco.sdk.Selector.selectImpl(Selector.java:93)
	at com.netease.open.libpoco.sdk.Selector.selectImpl(Selector.java:66)
	at com.netease.open.libpoco.sdk.Selector.select(Selector.java:37)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.netease.open.hrpc.backend.RpcServer.onRequest(RpcServer.java:171)
	at com.netease.open.hrpc.backend.RpcServer.serve(RpcServer.java:57)
	at fi.iki.elonen.NanoHTTPD$HTTPSession.execute(NanoHTTPD.java:840)
	at fi.iki.elonen.NanoHTTPD$ClientHandler.run(NanoHTTPD.java:189)
	at java.lang.Thread.run(Thread.java:818)


|--   Remote Traceback end   --|

----------------------------------------------------------------------
Ran 1 test in 861.010s

FAILED (errors=1)
[02:05:03][DEBUG]<airtest.core.android.adb> D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s f709dc0c7d23 forward --remove tcp:16150
[02:05:03][DEBUG]<airtest.core.android.adb> D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s f709dc0c7d23 forward --remove tcp:17360
[02:05:03][DEBUG]<airtest.core.android.adb> D:\airtest\AirtestIDE_2020-01-21_py3_win64\AirtestIDE_2020-01-21_py3_win64\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s f709dc0c7d23 forward --remove tcp:13708
[Finished]

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复现步骤