[Nexus 6 Q&A, Help & Troubleshooting] symbiansucks:
I am using nexus 6 with Pure nexus latest rom with lean kernel. I am having issues of random reboots. I did logcat via adb and found that the prcesseses crash after log "Try warming up com.lsdroid.cerberus". The process name can be different. Below is the logcat output of relevent time.

Note: I have installed xposed, powernap, greenify, amplify

[ 01-15 00:10:37.629 24888:25544 I/Icing ]

Indexing done 33B27C6D22C744251B76B07D92373402901F55C2

[ 01-15 00:10:37.655 23847:24629 I/ActivityManager ]

Killing 32326:com.cyanogenmod.lockclock/u0a47 (adj 15): empty #17

[ 01-15 00:10:43.965 23847:23847 I/Xposed ]

[Power Nap] System tried to update inactive wakelock, returning null.

[ 01-15 00:10:46.575 26891:26891 I/Cleaner ]

Completion of background sync detected

[ 01-15 00:10:57.791 23847:26153 D/NetlinkSocketObserver ]

NeighborEvent{elapsedMs=289161366, 192.168.0.2, [F43E61DBEE69], RTM_NEWNEIGH, NUD_STALE}

[ 01-15 00:11:04.383 25031:27433 I/GCM ]

GCM message com.lsdroid.cerberus 0:1452798663772929%35066e63f9fd7ecd

[ 01-15 00:11:04.400 23847:25831 I/GCM ]

Awakening GCM message to com.lsdroid.cerberus

[ 01-15 00:11:04.440 25031:25031 W/GCM-DMM ]

broadcast intent callback: result=CANCELLED forIntent { act=com.google.android.c2dm.intent.RECEIVE flg=0x10000000 pkg=com.lsdroid.cerberus (has extras) }

[ 01-15 00:11:05.440 23847:23847 I/GCM ]

Try warming up com.lsdroid.cerberus

[ 01-15 00:11:05.455 23847:23847 D/AndroidRuntime ]

Shutting down VM

[ 01-15 00:11:05.465 23847:23847 E/AndroidRuntime ]

*** FATAL EXCEPTION IN SYSTEM PROCESS: main

java.lang.NoSuchMethodError: No interface method broadcastIntent(Landroid/app/IApplicationThread;Landroid/content/Intent;Ljava/lang/String;Landroid/content/IIntentReceiver;ILjava/lang/String;Landroid/os/Bundle;Ljava/lang/String;IZZI)I in class Landroid/app/IActivityManager; or its super classes (declaration of 'android.app.IActivityManager' appears in /system/framework/framework.jar)

[ 01-15 00:11:05.488 23847:23847 I/Process ]

Sending signal. PID: 23847 SIG: 9

[ 01-15 00:11:05.728 285: 285 E/installd ]

eof

[ 01-15 00:11:05.728 285: 285 E/installd ]

failed to read size

[ 01-15 00:11:05.729 285: 285 I/installd ]

closing connection

[ 01-15 00:11:05.734 265: 265 I/lowmemorykiller ]

ActivityManager disconnected

[ 01-15 00:11:05.735 265: 265 I/lowmemorykiller ]

Closing Activity Manager data connection

[ 01-15 00:11:05.742 25031:25086 I/RttManager ]

RTT manager get message: 69636

[ 01-15 00:11:05.742 25031:25086 E/RttManager ]

Channel connection lost

[ 01-15 00:11:05.743 25031:25145 E/WifiScanner ]

Channel connection lost

[ 01-15 00:11:05.743 25031:25071 W/Sensors ]

sensorservice died [0xa87b25c0]

[ 01-15 00:11:05.745 25031:25076 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.748 266: 266 I/ServiceManager ]

service 'telecom' died

[ 01-15 00:11:05.749 266: 266 I/ServiceManager ]

service 'activity' died

[ 01-15 00:11:05.749 266: 266 I/ServiceManager ]

service 'user' died

[ 01-15 00:11:05.749 266: 266 I/ServiceManager ]

service 'procstats' died

[ 01-15 00:11:05.749 266: 266 I/ServiceManager ]

service 'meminfo' died

[ 01-15 00:11:05.749 266: 266 I/ServiceManager ]

service 'gfxinfo' died

[ 01-15 00:11:05.750 266: 266 I/ServiceManager ]

service 'dbinfo' died

[ 01-15 00:11:05.750 266: 266 I/ServiceManager ]

service 'cpuinfo' died

[ 01-15 00:11:05.750 266: 266 I/ServiceManager ]

service 'permission' died

[ 01-15 00:11:05.750 266: 266 I/ServiceManager ]

service 'processinfo' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'sensorservice' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'battery' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'usagestats' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'webviewupdate' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'scheduling_policy' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'telephony.registry' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'media.camera.proxy' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'account' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'content' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'vibrator' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'consumer_ir' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'alarm' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'window' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'lock_settings' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'input' died

[ 01-15 00:11:05.751 266: 266 I/ServiceManager ]

service 'bluetooth_manager' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'input_method' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'accessibility' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'mount' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'persistent_data_block' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'uimode' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'deviceidle' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'device_policy' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'statusbar' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'clipboard' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'network_management' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'textservices' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'network_score' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'netstats' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'netpolicy' died

[ 01-15 00:11:05.752 266: 266 I/ServiceManager ]

service 'wifip2p' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'wifi' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'wifiscanner' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'rttmanager' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'ethernet' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'connectivity' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'servicediscovery' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'updatelock' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'notification' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'devicestoragemonitor' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'location' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'country_detector' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'search' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'dropbox' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'wallpaper' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'audio' died

[ 01-15 00:11:05.753 266: 266 I/ServiceManager ]

service 'DockObserver' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'midi' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'usb' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'serial' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'jobscheduler' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'backup' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'appwidget' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'voiceinteraction' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'diskstats' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'samplingprofiler' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'commontime_management' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'dreams' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'assetatlas' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'graphicsstats' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'print' died

[ 01-15 00:11:05.754 266: 266 I/ServiceManager ]

service 'restrictions' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'media_session' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'media_router' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'trust' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'fingerprint' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'launcherapps' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'media_projection' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'imms' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'user.module.bootmanager' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'power' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'batterystats' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'appops' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'display' died

[ 01-15 00:11:05.755 266: 266 I/ServiceManager ]

service 'package' died

[ 01-15 00:11:05.758 24015:24034 W/Sensors ]

sensorservice died [0xa8344740]

[ 01-15 00:11:05.759 23545:23984 W/AudioFlinger ]

power manager service died !!!

[ 01-15 00:11:05.759 24015:24266 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.759 23545:23984 W/AudioFlinger ]

power manager service died !!!

[ 01-15 00:11:05.760 23545:23984 W/AudioFlinger ]

power manager service died !!!

[ 01-15 00:11:05.770 31355:32429 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.771 267: 267 D/SurfaceFlinger ]

Set power mode=2, type=0 flinger=0xb6aa4000

[ 01-15 00:11:05.771 267: 267 D/qdhwcomposer ]

hwc_setPowerMode: Setting mode 2 on display: 0

[ 01-15 00:11:05.775 24574:24874 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.775 24533:24636 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.783 31728:31748 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.784 28261:28276 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.784 24888:27903 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.785 31471:31551 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:05.786 25202:30169 W/Sensors ]

sensorservice died [0xa8361080]

[ 01-15 00:11:05.796 25121:25191 E/WifiManager ]

Channel connection lost

[ 01-15 00:11:06.041 267: 463 I/qdhwcomposer ]

handle_blank_event: dpy:0 panel power state: 1

[ 01-15 00:11:06.043 267: 267 D/qdhwcomposer ]

hwc_setPowerMode: Done setting mode 2 on display 0

[ 01-15 00:11:06.105 32718:32721 D/libEGL ]

loaded /vendor/lib/egl/libEGL_adreno.so

[ 01-15 00:11:06.217 32718:32721 D/libEGL ]

loaded /vendor/lib/egl/libGLESv1_CM_adreno.so

[ 01-15 00:11:06.225 32718:32721 D/libEGL ]

loaded /vendor/lib/egl/libGLESv2_adreno.so

[ 01-15 00:11:06.240 32718:32721 I/Adreno ]

QUALCOMM build : 52af4d2, I8366cd0437

Build Date : 10/20/15

OpenGL ES Shader Compiler Version: XE031.05.13.02

Local Branch : M14

Remote Branch :

Remote Branch :

Reconstruct Branch :

[ 01-15 00:11:06.253 32718:32721 E/BootAnimation ]

couldn't find audio_conf.txt

[ 01-15 00:11:07.549 23543:23543 E/Zygote ]

Exit zygote because system server (23847) has terminated

[ 01-15 00:11:07.682 266: 266 I/ServiceManager ]

service 'user.xposed.system' died

[ 01-15 00:11:07.684 266: 266 I/ServiceManager ]

service 'user.xposed.app' died

[ 01-15 00:11:07.711 266: 266 I/ServiceManager ]

service 'media.radio' died

[ 01-15 00:11:07.711 266: 266 I/ServiceManager ]

service 'media.sound_trigger_hw' died

[ 01-15 00:11:07.711 266: 266 I/ServiceManager ]

service 'media.audio_flinger' died

[ 01-15 00:11:07.711 266: 266 I/ServiceManager ]

service 'media.player' died

[ 01-15 00:11:07.711 266: 266 I/ServiceManager ]

service 'media.resource_manager' died

[ 01-15 00:11:07.711 266: 266 I/ServiceManager ]

service 'media.camera' died

[ 01-15 00:11:07.711 266: 266 I/ServiceManager ]

service 'media.audio_policy' died

[ 01-15 00:11:07.756 32724:32724 I/Netd ]

Netd 1.0 starting

[ 01-15 00:11:07.756 32724:32724 D/TetherController ]

Setting IP forward enable = 0

[ 01-15 00:11:07.759 266: 266 I/ServiceManager ]

service 'cneservice' died

[ 01-15 00:11:07.846 266: 266 I/ServiceManager ]

service 'nfc' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'phone' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'carrier_config' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'sip' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'ims' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'isub' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'simphonebook' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'iphonesubinfo' died

[ 01-15 00:11:07.859 266: 266 I/ServiceManager ]

service 'isms' died

Same thing happened another time as well here again the try warming up line was present

[ 01-14 23:05:29.559 17326:23373 I/SwrveSDK ]

Sending queued events

[ 01-14 23:05:29.567 17326:23373 I/SwrveSDK ]

Sending 3 events to Swrve

[ 01-14 23:05:29.603 16035:16035 I/GCM ]

Try warming up com.life360.android.safetymapd

[ 01-14 23:05:29.605 16035:16035 D/AndroidRuntime ]

Shutting down VM

[ 01-14 23:05:29.607 16035:16035 E/AndroidRuntime ]

*** FATAL EXCEPTION IN SYSTEM PROCESS: main

java.lang.NoSuchMethodError: No interface method broadcastIntent(Landroid/app/IApplicationThread;Landroid/content/Intent;Ljava/lang/String;Landroid/content/IIntentReceiver;ILjava/lang/String;Landroid/os/Bundle;Ljava/lang/String;IZZI)I in class Landroid/app/IActivityManager; or its super classes (declaration of 'android.app.IActivityManager' appears in /system/framework/framework.jar)

[ 01-14 23:05:29.639 16035:16035 I/Process ]

Sending signal. PID: 16035 SIG: 9

[ 01-14 23:05:29.765 266: 266 I/ServiceManager ]

service 'telecom' died

Build: MMB29M

Build fingerprint: 'google/shamu/shamu:6.0.1/MMB29K/2419427:user/release-keys'

Bootloader: moto-apq8084-71.15

Radio: mdm

Kernel: Linux version 3.10.94-leanKernel-shamu-3.4-+ (imoseyon@leankernel) (gcc version 4.9.3 20150311 (prerelease) (crosstool-NG 1.20.0 - Linaro GCC 2015.03 - Cortex-A15) ) #1084 SMP PREEMPT Fri Dec 11 16:00:01 PST 2015