Description of problem:
All netinst openQA tests for Fedora-Rawhide-20160331.n.0 crashed like this on the Welcome screen. Only DVD image tests succeeded. There was no Workstation or KDE live image, so I don't know if live works or not.

Version-Release number of selected component:
anaconda-25.5-1

The following was filed automatically by anaconda:
anaconda 25.5-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python3.5/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/image.py", line 143, in opticalInstallMedia
    devicetree.handle_format(dev)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/packaging/__init__.py", line 996, in _setupInstallDevice
    self.install_device = opticalInstallMedia(storage.devicetree)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/packaging/dnfpayload.py", line 842, in updateBaseRepo
    checkmount)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/packaging/__init__.py", line 1307, in _runThread
    payload.updateBaseRepo(fallback=fallback, checkmount=checkmount)
  File "/usr/lib64/python3.5/threading.py", line 862, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/threads.py", line 253, in run
    threading.Thread.run(self, *args, **kwargs)
TypeError: handle_format() missing 1 required positional argument: 'device'

Additional info:
addons:         com_redhat_kdump, com_redhat_docker
cmdline:        /usr/bin/python3  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-E-dvd-x86_64-rawh quiet
dnf.rpm.log:    Mar 31 11:14:59 INFO --- logging initialized ---
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.6.0-0.rc1.git0.1.fc25.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        rawhide