# Pastebin iBtKVqhV
Executing command: ['hg', 'update', '-r', 'default', '-R', './mozilla']
abort: uncommitted changes
(commit or update --clean to discard changes)
Traceback (most recent call last):
  File "client.py", line 665, in <module>
    options.mozilla_rev, options.hgtool, options.hgtool1)
  File "client.py", line 380, in do_hg_pull
    check_call_noisy(cmd, retryMax=0)
  File "client.py", line 139, in check_call_noisy
    execute_check_call(cmd, *args, **kwargs)
  File "client.py", line 135, in execute_check_call
    check_call(cmd, *args, **kwargs)
  File "/usr/lib/python2.7/subprocess.py", line 541, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['hg', 'update', '-r', 'default', '-R', './mozilla']' returned non-zero exit status 255