Description of problem:
I booted off the latest rawhide image for x64. The installer crashed after a few minutes of being open. My first attempt I couldn't get past the EULA page. My second attempt crashed on the Installation Summery page and then the error message apeared. The program seems to be still running in the background since the Installation Desination button stopped probing local disks.

Version-Release number of selected component:
anaconda-core-23.13-1.fc23.x86_64

The following was filed automatically by anaconda:
anaconda 23.13-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python3.4/site-packages/blivet/tasks/fsminsize.py", line 57, in _getResizeInfo
    error_msg = "failed to gather info from resize program: %s" % e
  File "/usr/lib/python3.4/site-packages/blivet/tasks/fsminsize.py", line 168, in doTask
    resize_info = self._getResizeInfo()
  File "/usr/lib/python3.4/site-packages/blivet/formats/fs.py", line 288, in updateSizeInfo
    result = self._minsize.doTask()
  File "/usr/lib/python3.4/site-packages/blivet/formats/fs.py", line 134, in __init__
    self.updateSizeInfo()
  File "/usr/lib/python3.4/site-packages/blivet/formats/__init__.py", line 81, in getFormat
    fmt = fmt_class(*args, **kwargs)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 1427, in handleUdevDeviceFormat
    device.format = formats.getFormat(format_designator, **kwargs)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 757, in addUdevDevice
    self.handleUdevDeviceFormat(info, device)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 1656, in _populate
    self.addUdevDevice(dev)
  File "/usr/lib/python3.4/site-packages/blivet/populator.py", line 1593, in populate
    self._populate()
  File "/usr/lib/python3.4/site-packages/blivet/devicetree.py", line 551, in populate
    self._populator.populate(cleanupOnly=cleanupOnly)
  File "/usr/lib/python3.4/site-packages/blivet/blivet.py", line 279, in reset
    self.devicetree.populate(cleanupOnly=cleanupOnly)
  File "/usr/lib/python3.4/site-packages/blivet/osinstall.py", line 1119, in storageInitialize
    storage.reset()
  File "/usr/lib64/python3.4/threading.py", line 868, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.4/site-packages/pyanaconda/threads.py", line 244, in run
    threading.Thread.run(self, *args, **kwargs)
UnboundLocalError: local variable 'e' referenced before assignment

Additional info:
cmdline:        /usr/bin/python3  /sbin/anaconda --liveinst --method=livecd:///dev/mapper/live-base
cmdline_file:   BOOT_IMAGE=vmlinuz0 initrd=initrd0.img root=live:CDLABEL=Fedora-Live-WS-x86_64-rawhide-20 rootfstype=auto ro rd.live.image quiet  rhgb rd.luks=0 rd.md=0 rd.dm=0 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.2.0-0.rc0.git4.1.fc23.x86_64
other involved packages: python3-libs-3.4.3-5.fc23.x86_64, python3-blivet-1.7-1.fc23.noarch
product:        Fedora
release:        Fedora release 23 (Rawhide)
type:           anaconda
version:        Rawhide