File "/home/cmiller/work/cabzr/desktopcouch/getport-at-call-time/desktopcouch/start_local_couchdb.py", line 93, in run_couchdb
    retcode = subprocess.call(local_exec)
  File "/usr/lib/python2.6/subprocess.py", line 444, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.6/subprocess.py", line 595, in __init__
    errread, errwrite)
  File "/usr/lib/python2.6/subprocess.py", line 1084, in _execute_child
    data = os.read(errpipe_read, 1048576) # Exceptions limited to 1 MB
exceptions.OSError: [Errno 4] Interrupted system call


This os.read is a byproduct of something the Popen.__init__ implementation
must do, and it is safe for it to continue to get the information it needs,
without the user's knowledge.

The process is started, then this is aborted before the Popen.stdout and
.stderr are set up, leaving the object in a weird state.