I have cloned the darcs repo to a USB stick (/media/franksen/KNOPPIX/darcs/home). Then I cd into the repo and pull from my home:

"""
> darcs pull ~/src/darcs/screened -a
By the way, to change the default remote repository to
      /home/franksen/src/darcs/screened,
you can issue the same command with the --set-default flag.
Rebase in progress: 7 suspended patches
Couldn't write `0000000442-6342cc420577bce14568b2f24be435d8fe4d417068be1ef2c06d03793f74d686'
in subdir patches to sources:

repo:/home/franksen/src/darcs/screened
thisrepo:/media/franksen/KNOPPIX/darcs/home
cache:/home/franksen/.cache/darcs
repo:/home/ben/src/darcs/screened
repo:.
repo:http://darcs.net/screened


By the way, I could not reach the following location:
  /home/ben/src/darcs/screened
Unless you plan to restore access to it, you should delete the corresponding entry from _darcs/prefs/sources.
"""

If I do a rebase pull instead I get

> darcs rebase pull ~/src/darcs/screened -a        
By the way, to change the default remote repository to         
      /home/franksen/src/darcs/screened,
you can issue the same command with the --set-default flag.
Rebase in progress: 7 suspended patches                        
darcs: _darcs/patches/pending.new: openBinaryFile: resource exhausted (No space left on device)

The error message is bogus, I do have enough space:

"""
> df -h /media/franksen/KNOPPIX
Filesystem      Size  Used Avail Use% Mounted on
/dev/sdj         16G  4,4G   11G  30% /media/franksen/KNOPPIX
"""

Something is not right here...

(As usual, darcs version is the current screened, but the same happens with darcs-2-12.5).