Warning: SUID file Will not be repaired System/Library/core services/Remote
MacBook Pro (Retina, Mid 2012), OS X Yosemite (10.10.5)
If the question is what do I do about this, the answer is nothing at all.
Here is Apple's take on it:
Mac OS X: Disk Utility's Repair Disk Permissions messages that you can safely ignore - Apple Support
You won't need to worry about it after you upgrade to El Capitan OS 10.11. Apple have removed Repair Permissions from Disk Utility.
Warning: SUID file “System/Library/CoreServices/Remote managementManagement/ARDAgent.app/Contents/MacOS/ARD management/ARB agent.A PP/contentsAgent” has been modified and will not be repaired.
