Description of problem:
using alternate image from happyassasin to bypass fsck during install crashed the installer

Version-Release number of selected component:
anaconda-25.20.8-1

The following was filed automatically by anaconda:
anaconda 25.20.8-1 exception report
Traceback (most recent call first):
  File "/tmp/updates/blivet/tasks/fsminsize.py", line 131, in do_task
    raise FSError("failed to get block size for %s filesystem on %s" % (self.fs.mount_type, self.fs.device.name))
  File "/tmp/updates/blivet/formats/fs.py", line 297, in update_size_info
    result = self._minsize.do_task()
  File "/tmp/updates/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/tmp/updates/blivet/formats/fs.py", line 125, in __init__
    self.update_size_info()
  File "/tmp/updates/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/tmp/updates/blivet/formats/__init__.py", line 98, in get_format
    fmt = fmt_class(*args, **kwargs)
  File "/tmp/updates/blivet/populator/helpers/formatpopulator.py", line 89, in run
    self.device.format = formats.get_format(type_spec, **kwargs)
  File "/tmp/updates/blivet/populator/populator.py", line 345, in handle_format
    helper_class(self, info, device).run()
  File "/tmp/updates/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/tmp/updates/blivet/populator/populator.py", line 318, in handle_device
    self.handle_format(info, device)
  File "/tmp/updates/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/tmp/updates/blivet/populator/populator.py", line 518, in _populate
    self.handle_device(dev)
  File "/tmp/updates/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/tmp/updates/blivet/populator/populator.py", line 451, in populate
    self._populate()
  File "/tmp/updates/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/tmp/updates/blivet/blivet.py", line 271, in reset
    self.devicetree.populate(cleanup_only=cleanup_only)
  File "/tmp/updates/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/tmp/updates/blivet/osinstall.py", line 1175, in storage_initialize
    storage.reset()
  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 251, in run
    threading.Thread.run(self, *args, **kwargs)
AttributeError: 'str' object has no attribute 'name'

Additional info:
addons:         com_redhat_kdump, com_redhat_docker
cmdline:        /usr/bin/python3  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=(loop)/isolinux/vmlinuz repo=hd:/dev/sda7:/ inst.updates=https://www.happyassassin.net/updates/1170803.0.img
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.8.6-300.fc25.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        25