Nexus 6p evaluated as rooted

[AaronChanSunny]

Log as below：

I/OpenGLRenderer: Initialized EGL, version 1.4
I/RootBeer: QLog: <clinit>() [28] - Log class reloaded
V/RootBeer: RootBeer: checkForRWPaths() [289] - /sbin path is mounted with rw permissions!
I/RootBeer: LOOKING FOR BINRARY: /data/local/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /data/local/bin/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /data/local/xbin/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /sbin/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /system/bin/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /system/bin/.ext/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /system/bin/failsafe/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /system/sd/xbin/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /system/usr/we-need-root/su Absent :(
I/RootBeer: LOOKING FOR BINRARY: /system/xbin/su Absent :(
I/Choreographer: Skipped 9851 frames!  The application may be doing too much work on its main thread.
V/RenderScript: 0x7f80a0e000 Launching thread(s), CPUs 8

My Nexus 6p is not rooted.

[valls]

I have the same problem with Nexus 6. (with the same log)