jenkins - Android emulator failed to start after 360 seconds -

i have jenkins 1.568 installed on macbook air running ubuntu 14.04. have android emulator plugin installed, , configuration have set runs emulator in -no-window mode before starting each build.

about half of builds fine, other half, following on console:

[android] starting android emulator $ /usr/local/src/android/android-sdk-linux/tools/emulator -no-boot-anim -ports 5782,5783 -avd caesar -no-snapshot-load -no-snapshot-save -no-window -no-audio -no-skin -no-window * daemon not running. starting on port 5784 * * daemon started * failed initialize backend egl display $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 [android] waiting emulator finish booting... $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 $ /usr/local/src/android/android-sdk-linux/platform-tools/adb -s emulator-5782 shell getprop dev.bootcomplete error: device offline $ /usr/local/src/android/android-sdk-linux/platform-tools/adb connect emulator-5782 [android] timed-out after waiting 360 seconds emulator $ /usr/local/src/android/android-sdk-linux/platform-tools/adb disconnect emulator-5782 [android] stopping android emulator 

clearly, emulator failing 50% of time. i'm not sure why, though, or how fix it. suggestions welcome how can running , not have restart failed builds using naginator.

try update java. had android emulator problems in past , java update fixed them.