I have a Macbook 5,1, and installed a patched version of MacOS Sierra not long time ago. If it matters the battery is not original, and the magsafe is also replaced. It also used to crash often with the old magsafe while I connected and disconnected repeatedly, this new magsafe I've soldered recently and I dont if it makes any problems.
But today it crashed twice first time I was working with software. Just now I was only browsing the internet, safe sites that I visit regularly and there is no reason why it should crash but it did. I dont understand much from this log and dont know what I could do to find out the reason it crashes.
Apr 18 22:09:11 myself GoogleSoftwareUpdateAgent: 2017-04-18 22:09:11.952 GoogleSoftwareUpdateAgent[873/0x7fffb29b03c0] [lvl=2] -[KSAgentApp setupLoggerOutput] Agent settings: KSAgentSettings:0x100206c50 bundleID=com.google.Keystone.Agent lastCheck=2017-04-18 18:08:48 +0000 checkInterval=18000.000000 uiDisplayInterval=604800.000000 sleepInterval=1800.000000 jitterInterval=900 maxRunInterval=0.000000 isConsoleUser=1 ticketStorePath=/Users/myself/Library/Google/GoogleSoftwareUpdate/TicketStore/Keystone.ticketstore runMode=3 daemonUpdateEngineBrokerServiceName=com.google.Keystone.Daemon.UpdateEngine daemonAdministrationServiceName=com.google.Keystone.Daemon.Administration logEverything=0 logBufferSize=2048 alwaysPromptForUpdates=0 productIDToUpdate=(null) lastUIDisplayed=(null) alwaysShowStatusItem=0 updateCheckTag=(null) printResults=NO userInitiated=NO>
Apr 18 22:10:36 myself com.apple.xpc.launchd (com.apple.quicklook): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Apr 18 22:14:46 myself com.apple.xpc.launchd (com.apple.quicklook): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Apr 18 22:16:18 localhost bootlog: BOOT_TIME 1492542978 0