Description of problem:
I ran the command with a '&' at the end (forking to background) and closed the terminal, which closed the usual stdio channels.

Version-Release number of selected component:
youtube-dl-2017.07.09-1.fc26

Additional info:
reporter:       libreport-2.9.1
cmdline:        /usr/bin/python3 /usr/bin/youtube-dl https://www.youtube.com/watch?v=lSquU1kzBVU
crash_function: write_string
exception_type: OSError
executable:     /usr/bin/youtube-dl
kernel:         4.11.10-300.fc26.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
utils.py:1400:write_string:OSError: [Errno 5] Input/output error

Traceback (most recent call last):
  File "/usr/bin/youtube-dl", line 11, in <module>
    load_entry_point('youtube-dl==2017.7.9', 'console_scripts', 'youtube-dl')()
  File "/usr/lib/python3.6/site-packages/youtube_dl/__init__.py", line 464, in main
    _real_main(argv)
  File "/usr/lib/python3.6/site-packages/youtube_dl/__init__.py", line 454, in _real_main
    retcode = ydl.download(all_urls)
  File "/usr/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 1926, in download
    url, force_generic_extractor=self.params.get('force_generic_extractor', False))
  File "/usr/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 761, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 433, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1423, in _real_extract
    video_webpage = self._download_webpage(url, video_id)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 634, in _download_webpage
    res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal, encoding=encoding, data=data, headers=headers, query=query)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 531, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 487, in _request_webpage
    self.report_download_webpage(video_id)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 699, in report_download_webpage
    self.to_screen('%s: Downloading webpage' % video_id)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 691, in to_screen
    self._downloader.to_screen('[%s] %s' % (self.IE_NAME, msg))
  File "/usr/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 483, in to_screen
    return self.to_stdout(message, skip_eol, check_quiet=True)
  File "/usr/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 497, in to_stdout
    self._write_string(output, self._screen_file)
  File "/usr/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 486, in _write_string
    write_string(s, out=out, encoding=self.params.get('encoding'))
  File "/usr/lib/python3.6/site-packages/youtube_dl/utils.py", line 1400, in write_string
    out.flush()
OSError: [Errno 5] Input/output error

Local variables in innermost frame:
enc: 'UTF-8'
byt: b'[youtube] lSquU1kzBVU: Downloading webpage\n'
encoding: None
out: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='UTF-8'>
s: '[youtube] lSquU1kzBVU: Downloading webpage\n'