last thing reported in the log is
Can not connect to /var/run/systemkeychaincheck.socket: No such file or directory
341 - Client: 'ReportCrash', exited with 0 session(s), 0 node(s) and 0 active request(s)
maybe your image is corrupted? try remaking the installer... also it looks like your using mbr disk?
Aug 13 06:05:01 localhost OSInstaller[348]: 0: FDisk_partition_scheme (null) *320.07 GB disk0
Aug 13 06:05:01 localhost OSInstaller[348]: 1: Windows_NTFS System Reserved 104.9 MB disk0s1 /Volumes/System Reserved
Aug 13 06:05:01 localhost OSInstaller[348]: 2: Windows_NTFS (null) 36.6 GB disk0s2 /Volumes/Untitled
Aug 13 06:05:01 localhost OSInstaller[348]: 3: Windows_NTFS Data 263.37 GB disk0s3 /Volumes/Data
Aug 13 06:05:01 localhost OSInstaller[348]: 4: Apple_HFS Mac 20 GB disk0s4 /Volumes/Mac