[Duplicity-tracker] [bug #25138] Bad file descriptor on Cygwin

[Poojan Wagh]

Follow-up Comment #2, bug #25138 (project duplicity):

Hi, Ken. Based on your comments on a similar problem, I did try increasing
ulimit -n to 2048. I'm using duplicity 0.5.03. I also tried the
--short-filenames options as you suggested in that thread. Neither seem to
effect a solution.

Just in case, I tried setting the temporary directory elsewhere (a separate
drive, outside of the Windows user profile). In addition, I set a tempdir
option as well.

I've tried backing up another directory, and it seemed to work without a
problem. The main difference was the number and size of files. (The directory
that fails has more files and larger size files than the directory that
works.)

I also tried running the command a few times. Although it fails, it does
leave a partial backup that is recognized on subsequent runs, so that at least
is good.

After a few runs, I was finally able to upload the whole set. So, I'm happy.
Essentially, the program quits prematurely and needs a restart.

I realize now that the problem seems to be that pexpect.py tries to close a
child process (line 150). Maybe for some reason, the process is already closed
without pexpect noticing?

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