各位好，
我这边有个诡异的问题：
这几天 appium 运行 android 和 ios 真机都调试通过，但是今天运行 android 脚本，appium 运行到找到 device 那步就不继续执行了。
如下，接着就是反复的等待状态了：
debug: Using fast reset? true
debug: executing: "/Users/dongdaqing/Documents/AndroidDevEnv/android-sdk-macosx/platform-tools/adb" devices

info: Creating new appium session a6fed93c-629d-4dd4-bf8f-75cb7afb6938
info: Starting android appium
info: Preparing device for session
info: Checking whether app is actually present
info: Checking whether adb is present
info: [ADB] Using adb from /Users/dongdaqing/Documents/AndroidDevEnv/android-sdk-macosx/platform-tools/adb
info: Trying to find a connected android device
info: [ADB] Getting connected devices...

info: [ADB] 1 device(s) connected

debug: Appium request initiated at /wd/hub/status

info: Responding to client with success: {"status":0,"value":{"build":{"version":"0.12.0","revision":"a9d21807874190ae6d19f8251375cfe4da7b2ae5"}},"sessionId":"a6fed93c-629d-4dd4-bf8f-75cb7afb6938"}

debug: Request received with params: {}

GET /wd/hub/status 200 1ms - 199b

debug: Appium request initiated at /wd/hub/status

info: Responding to client with success: {"status":0,"value":{"build":{"version":"0.12.0","revision":"a9d21807874190ae6d19f8251375cfe4da7b2ae5"}},"sessionId":"a6fed93c-629d-4dd4-bf8f-75cb7afb6938"}

debug: Request received with params: {}

GET /wd/hub/status 200 1ms - 199b