[ccache] ccache shared cache - fails to rename

[devsk]

I see a lot of 


[2011-04-01T23:31:16.190840 26563] Failed to rename 
/var/tmp/ccache/8/7/007a9f0d4b791e3c439260a8b86724-2049.manifest.tmp.localhost.26563
 to /var/tmp/ccache/8/7/007a9f0d4b791e3c439260a8b86724-2049.manifest

in the log file. The source is owned by one user running the ccache currently 
and destination is owned by another user. Both files are 'rw' by everybody.

Any ideas why would it fail to rename the file?

CCACHE_UMASK is set to 0000.

Thanks,
-devsk