在Airtest中执行元素遍历后，移除TCP连接报错10061

bug描述
在Airtest中执行元素遍历后，移除TCP连接报错10061，问题固定出现，遍历APP，尝试两个页面均有出现该情况。
单独执行代码块是成功的，注释for循环时，remove tcp是正常的。
**复现步骤：**
# -*- encoding=utf8 -*-
__author__ = "Administrator"

from airtest.core.api import *
from airtest.cli.parser import cli_setup

if not cli_setup():
auto_setup(__file__, logdir=True, devices=["android://127.0.0.1:5037/127.0.0.1:62001?cap_method=JAVACAP&&ori_method=ADBORI&&touch_method=MINITOUCH"])

from poco.drivers.android.uiautomation import AndroidUiautomationPoco
poco = AndroidUiautomationPoco(use_airtest_input=True, screenshot_each_action=False)

print("start...")

list1=poco("android.widget.LinearLayout").offspring("android:id/content").offspring("androidx.recyclerview.widget.RecyclerView").child("android.widget.FrameLayout").offspring("com.smart.cloud.manage:id/rv_identity").child("com.smart.cloud.manage:id/cl_main")

for i in list1:
print(i)

print('end')

python 版本: python 3.6.5

操作系统:Windows7 64bit

手机设备信息:
- 手机型号: 夜神模拟器 7.0.1.3
- Android系统版本号: [e.g. Android 7.1.2]
- (别的信息)

截屏
1.单独执行代码块：
[DEBUG][Start debugging...]
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 get-state
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 wait-for-device
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell getprop ro.build.version.sdk
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys activity top
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys package com.netease.open.pocoservice
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys package com.netease.open.pocoservice.test
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --no-rebind tcp:16369 tcp:10080
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --no-rebind tcp:18215 tcp:10081
D:\Airtest\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell ps |echo $(grep -E com.github.uiautomator)
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[0]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[1]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[2]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[3]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[4]"
end

[DEBUG][End debugging....]

2.注释for循环

"C:\Users\Administrator\AppData\Local\Programs\Python\Python36\python.exe" -u "D:\python_test\Airtest\logts.py"
============================================================

[Start running..]
no cmdline args
[09:33:55][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 get-state
[09:33:55][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 wait-for-device
[09:33:55][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell getprop ro.build.version.sdk
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys activity top
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys package com.netease.open.pocoservice
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys package com.netease.open.pocoservice.test
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --no-rebind tcp:13235 tcp:10080
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --no-rebind tcp:19743 tcp:10081
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell ps |echo $(grep -E com.github.uiautomator)
start...
end
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --remove tcp:13235
[09:33:56][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --remove tcp:19743
[Finished]

3.异常情况复现

"C:\Users\Administrator\AppData\Local\Programs\Python\Python36\python.exe" -u "D:\python_test\Airtest\logts.py"
============================================================

[Start running..]
no cmdline args
[09:34:23][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 get-state
[09:34:23][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 wait-for-device
[09:34:23][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell getprop ro.build.version.sdk
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys activity top
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys package com.netease.open.pocoservice
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell dumpsys package com.netease.open.pocoservice.test
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --no-rebind tcp:19980 tcp:10080
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --no-rebind tcp:16887 tcp:10081
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 shell ps |echo $(grep -E com.github.uiautomator)
start...
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[0]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[1]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[2]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[3]"
UIObjectProxy of "android.widget.LinearLayout>android:id/content>androidx.recyclerview.widget.RecyclerView/android.widget.FrameLayout>com.smart.cloud.manage:id/rv_identity/com.smart.cloud.manage:id/cl_main[4]"
end
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --remove tcp:19980
[09:34:24][DEBUG] C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s 127.0.0.1:62001 forward --remove tcp:16887
Exception ignored in: '>
Traceback (most recent call last):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\hrpc\object_proxy.py", line 114, in __del__
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\hrpc\client.py", line 63, in evaluate
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\hrpc\transport\http.py", line 26, in send
hrpc.exceptions.TransportDisconnected: HTTPConnectionPool(host='127.0.0.1', port=16887): Max retries exceeded with url: / (Caused by NewConnectionError(': Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。',))

Exception ignored in: '>
Traceback (most recent call last):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\hrpc\object_proxy.py", line 114, in __del__
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\hrpc\client.py", line 63, in evaluate
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\hrpc\transport\http.py", line 26, in send
hrpc.exceptions.TransportDisconnected: HTTPConnectionPool(host='127.0.0.1', port=16887): Max retries exceeded with url: / (Caused by NewConnectionError(': Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。',))

============================================================