I have the same problem. I have not un-installed OSX server because I use functionalities of Sever. But my console is completely inundated with error messages related to this account. Mainly when watching the system.log it is listing numerous files that it cannot access since they do not exist. One in particular that was bad was when I dug deeper was 'keychain_verify_create_path could not create path: /var/_xcsbuildd/Library/Keychains/C7CB88D2-DB66-5CB0-AE05-A41265168135 (Not a directory)' I went at looked at that keychain directory as ROOT and the Keychains folder was actually a file and not a directory so of course it couldnt write to the directory within. I see this with many other directory as well, namely its a file and not a directory. No idea how the account was so malformed but I havent done anything that should have caused this.
an ls -al of /var/_xcsbuildd/Library/ showed this:
drwxrwx---@ 47 _xcsbuildd wheel 1598 Sep 30 09:57 .
drwxr-xr-x+ 13 _xcsbuildd wheel 442 Sep 30 13:31 ..
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 .localized
drwx------ 5 _xcsbuildd wheel 170 Sep 23 15:36 Accounts
drwx------+ 12 _xcsbuildd wheel 408 Sep 23 15:36 Application Support
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Assistants
drwx------+ 5 _xcsbuildd wheel 170 Sep 23 15:35 Audio
drwx------+ 13 _xcsbuildd wheel 442 Sep 30 13:31 Caches
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 Calendars
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 ColorPickers
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 ColorSync
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Colors
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 Components
drwx------+ 3 _xcsbuildd wheel 102 Sep 23 15:35 Compositions
drwx------ 9 _xcsbuildd wheel 306 Sep 23 19:34 Containers
drwxr-xr-x 4 _xcsbuildd wheel 136 Sep 30 13:38 Cookies
drwxr-xr-x 3 _xcsbuildd wheel 102 Sep 23 15:36 Developer
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 Dictionaries
drwx------+ 3 _xcsbuildd wheel 102 Sep 23 15:35 Favorites
drwx------+ 8 _xcsbuildd wheel 272 Sep 23 15:35 FontCollections
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Fonts
drwxr-xr-x 3 _xcsbuildd wheel 102 Sep 23 15:36 Google
drwx------ 3 _xcsbuildd wheel 102 Sep 23 15:36 Group Containers
drwx------ 5 _xcsbuildd _xcs 170 Sep 23 15:39 IdentityServices
drwx------+ 3 _xcsbuildd wheel 102 Sep 23 15:35 Input Methods
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Internet Plug-Ins
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 KeyBindings
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Keyboard Layouts
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 Keychains
drwx------ 4 _xcsbuildd wheel 136 Sep 23 15:35 LaunchAgents
drwx------+ 8 _xcsbuildd wheel 272 Sep 25 11:07 Logs
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 Mail
drwx------ 5 _xcsbuildd _xcs 170 Sep 23 15:36 Messages
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 PreferencePanes
drwx------+ 66 _xcsbuildd wheel 2244 Sep 30 13:31 Preferences
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Printers
drwxr-xr-x 5 _xcsbuildd wheel 170 Sep 25 11:46 PubSub
-rw-r--r-- 1 _xcsbuildd wheel 0 Sep 23 15:35 QuickLook
drwxr-xr-x 3 _xcsbuildd wheel 102 Sep 24 14:36 Safari
drwx------ 3 _xcsbuildd wheel 102 Sep 23 15:36 Saved Application State
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Screen Savers
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Services
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Sounds
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Spelling
drwxr-xr-x 4 _xcsbuildd wheel 136 Sep 30 13:31 SyncedPreferences
drwx------+ 2 _xcsbuildd wheel 68 Sep 23 15:35 Voices
drwx------+ 4 _xcsbuildd wheel 136 Sep 23 15:35 iMovie
But I just want to be able to restart my machine without having to revert to blunt force methods via terminal.
It makes sense that it cant complete its tasks since it doesnt have access to directories it needs but come on. Do I really need to delete those files so that they get recreated correctly?