问题：当我尝试在Jenkins上构建一个Android项目时，模拟器偶尔会在启动时无限期挂起并完成作业：NOT_BUILT。
我有Jenkins奴隶在Debian EC2实例上运行 - 没有使用任何模拟器快照，每次运行都是干净的工作空间，所以我无法弄清楚为什么有时它们正确启动和更多经常没有。 在“通用仿真器选项”中，我检查了选项：'启动时重置仿真器状态'。
詹金斯版本：1.642
Android Emulator插件：2.13.1
...
[android] Using Android SDK: /var/lib/jenkins/tools/android-sdk
[android] Creating Android AVD: /var/lib/jenkins/.android/avd/hudson_it-IT_160_HVGA_android-22_armeabi-v7a.avd
[android] /var/lib/jenkins/tools/android-sdk/tools/android create avd -f -a -s HVGA -n hudson_it-IT_160_HVGA_android-22_armeabi-v7a -t android-22 --abi armeabi-v7a
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb start-server
* daemon not running. starting it now on port 6345 *
* daemon started successfully *
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb start-server
[android] Starting Android emulator
$ /var/lib/jenkins/tools/android-sdk/tools/emulator -ports 6343,6344 -prop persist.sys.language=it -prop persist.sys.country=IT -avd hudson_it-IT_160_HVGA_android-22_armeabi-v7a -no-snapshot-load -no-snapshot-save -wipe-data -no-window
resize2fs 1.42.13 (17-May-2015)
The filesystem is already 140800 (4k) blocks long. Nothing to do!
emulator: WARNING: Increasing RAM size to 1GB
Creating filesystem with parameters:
Size: 576716800
Block size: 4096
Blocks per group: 32768
Inodes per group: 7040
Inode size: 256
Journal blocks: 2200
Label:
Blocks: 140800
Block groups: 5
Reserved block group size: 39
Created filesystem with 11/35200 inodes and 4536/140800 blocks
Creating filesystem with parameters:
Size: 69206016
Block size: 4096
Blocks per group: 32768
Inodes per group: 4224
Inode size: 256
Journal blocks: 1024
Label:
Blocks: 16896
Block groups: 1
Reserved block group size: 7
Created filesystem with 11/4224 inodes and 1302/16896 blocks
emulator: warning: opening audio output failed
emulator: UpdateChecker: skipped version check
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
connected to localhost:6344
[android] Waiting for emulator to finish booting...
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb -s localhost:6344 shell getprop init.svc.bootanim
error: device offline
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb connect localhost:6344
[android] Timed-out after waiting 720 seconds for emulator
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb disconnect localhost:6344
[android] Stopping Android emulator
$ /var/lib/jenkins/tools/android-sdk/platform-tools/adb kill-server
Finished: NOT_BUILT
有人可以帮帮我吗？哪里有什么问题？ 谢谢大家。