Description of problem:
1. Download the boot iso for rawhide. 
2. Tried to create custom partition to use btrfs, but it was not allowed.
3. Accepted the automatic partition and then clicked next.
4. Clicked on creating the password for root.

Version-Release number of selected component:
anaconda-22.8-1

The following was filed automatically by anaconda:
anaconda 22.8-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/formats/fs.py", line 593, in mount
    raise FSError("mount failed: %s" % rc)
  File "/usr/lib/python2.7/site-packages/blivet/formats/fs.py", line 1114, in setup
    return self.mount(**kwargs)
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 2578, in mountFilesystems
    chroot=rootPath)
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 1600, in mountFilesystems
    readOnly=readOnly, skipRoot=skipRoot)
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 216, in turnOnFilesystems
    storage.mountFilesystems()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/install.py", line 195, in doInstall
    turnOnFilesystems(storage, mountOnly=flags.flags.dirInstall, callbacks=callbacks_reg)
  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)
FSError: mount failed: 32

Additional info:
addons:         com_redhat_kdump
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-rawhide-x86_64 rd.live.check quiet
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.18.0-0.rc0.git9.4.fc22.x86_64
product:        Fedora"
release:        Cannot get release name.
type:           anaconda
version:        Fedora