koji rawhide ppc64 build failing due to strange error?

[Mamoru Tasaka]

Hello, all:

After koji began to accept jobs again, all dist-f10 ppc64 builds seem
to be failing due to some strange error?

http://koji.fedoraproject.org/koji/taskinfo?taskID=710447
http://koji.fedoraproject.org/koji/taskinfo?taskID=710455
http://koji.fedoraproject.org/koji/taskinfo?taskID=710471

None of them have build.log and root.log say:

DEBUG util.py:272:  Executing command: ['rpm', '-Uvh', '--nodeps', '/builddir/build/originals/xscreensaver-5.05.90.3-3.fc10.src.rpm']
DEBUG util.py:250:  memory alloc (41 bytes) returned NULL.

Would someone investigate what is happening here?

Regards,
Mamoru