Description of problem:
I was doing a network install of Fedora 21 (KDE desktop) with custom partitioning.  This is reproducible, as I have retried the installation.

Version-Release number of selected component:
anaconda-21.48.21-1

The following was filed automatically by anaconda:
anaconda 21.48.21-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/iutil.py", line 272, in execReadlines
    raise OSError("process '%s' was killed" % argv)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1421, in install
    for line in execReadlines("/usr/libexec/anaconda/anaconda-yum", args):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/install.py", line 224, in doInstall
    payload.install()
  File "/usr/lib64/python2.7/threading.py", line 766, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 227, in run
    threading.Thread.run(self, *args, **kwargs)
OSError: process '['/usr/libexec/anaconda/anaconda-yum', '--config', '/tmp/anaconda-yum.conf', '--tsfile', '/mnt/sysimage/anaconda-yum.yumtx', '--rpmlog', '/tmp/rpm-script.log', '--installroot', '/mnt/sysimage', '--release', '21', '--arch', 'x86_64', '--macro', '__dbi_htconfig', 'hash nofsync %{__dbi_other} %{__dbi_perms}', '--macro', '__file_context_path', '/etc/selinux/targeted/contexts/files/file_contexts']' was killed

Additional info:
addons:         com_redhat_kdump
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   initrd=initrd.img inst.stage2=hd:UUID=E697-F9C8 quiet BOOT_IMAGE=vmlinuz 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.17.4-301.fc21.x86_64
product:        Fedora"
release:        Cannot get release name.
type:           anaconda
version:        Fedora