youtube-dl works under root, but not under www-data

[UltimateBrent]

I'm automating some downloads, and I can't get it to download right. When doing it under root, everything is fine, but if not, I get a 403 forbidden error. All I can assume is that youtube-dl is temp downloading the manifests somewhere www-data doesn't have permission? The local directory is 777...

$ ./youtube-dl --verbose -o "fart.%(ext)s"  https://www.youtube.com/watch?v=xWIKQMBBTtk --no-progress
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'--verbose', u'-o', u'fart.%(ext)s', u'https://www.youtube.com/watch?v=xWIKQMBBTtk', u'--no-progress']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.08.16.1
[debug] Python version 2.7.3 - Linux-3.2.0-60-virtual-x86_64-with-Ubuntu-12.04-precise
[debug] exe versions: ffmpeg N-39499-g12292f3, ffprobe N-39499-g12292f3
[debug] Proxy map: {}
[youtube] xWIKQMBBTtk: Downloading webpage
[youtube] xWIKQMBBTtk: Downloading video info webpage
[youtube] xWIKQMBBTtk: Extracting video information
[youtube] {22} signature length 40.42, html5 player new
[youtube] {43} signature length 40.42, html5 player new
[youtube] {18} signature length 40.42, html5 player new
[youtube] {5} signature length 40.42, html5 player new
[youtube] {36} signature length 40.42, html5 player new
[youtube] {17} signature length 40.42, html5 player new
[youtube] {137} signature length 40.42, html5 player new
[youtube] {248} signature length 40.42, html5 player new
[youtube] {136} signature length 40.42, html5 player new
[youtube] {247} signature length 40.42, html5 player new
[youtube] {135} signature length 40.42, html5 player new
[youtube] {244} signature length 40.42, html5 player new
[youtube] {134} signature length 40.42, html5 player new
[youtube] {243} signature length 40.42, html5 player new
[youtube] {133} signature length 40.42, html5 player new
[youtube] {242} signature length 40.42, html5 player new
[youtube] {160} signature length 40.42, html5 player new
[youtube] {140} signature length 40.42, html5 player new
[youtube] {171} signature length 40.42, html5 player new
[youtube] xWIKQMBBTtk: Downloading DASH manifest
WARNING: [youtube] xWIKQMBBTtk: Skipping DASH manifest: ExtractorError(u'Could not download DASH manifest: HTTP Error 403: Forbidden (caused by HTTPError()); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.',)
[debug] Invoking downloader on u'https://r3---sn-p5qlsnsk.googlevideo.com/videoplayback?mv=u&sparams=clen%2Cdur%2Cgcr%2Cgir%2Cid%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cnh%2Cpl%2Crequiressl%2Csource%2Cupn%2Cexpire&mt=1439925950&ms=au&requiressl=yes&ip=54.235.33.208&mn=sn-p5qlsnsk&mm=31&pl=19&id=o-ADNr2r2lZnlSaVdLwqofu7fzhvEEBnkTIo5OGfEkyz3d&gcr=us&fexp=9407992%2C9408513%2C9408710%2C9409069%2C9415052%2C9415365%2C9415435%2C9415485%2C9416023%2C9416126%2C9416337%2C9416520%2C9417707%2C9418153%2C9418702%2C9418958%2C9419042%2C9419311&expire=1439947944&dur=323.120&ipbits=0&sver=3&nh=IgpwcjAxLmlhZDI2KgkxMjcuMC4wLjE&key=yt5&gir=yes&mime=video%2Fmp4&itag=137&clen=69775704&source=youtube&upn=tQryq51x7hA&lmt=1434109100969571&keepalive=yes&signature=83E8CB9DC435ED25553AEBB23B7CD32470508AFE.5776531D55F224CCC4EFCE86C22D4451AC5970AE&ratebypass=yes'
ERROR: unable to download video data: HTTP Error 403: Forbidden
Traceback (most recent call last):
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1579, in process_info
    partial_success = dl(fname, new_info)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1527, in dl
    return fd.download(name, info)
  File "./youtube-dl/youtube_dl/downloader/common.py", line 342, in download
    return self.real_download(filename, info_dict)
  File "./youtube-dl/youtube_dl/downloader/http.py", line 60, in real_download
    data = self.ydl.urlopen(request)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1860, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python2.7/urllib2.py", line 406, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 519, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 444, in error
    return self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 378, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 527, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 403: Forbidden```

[dstftw]

Duplicate of #6451. Remove cache with youtube-dl --rm-cache-dir on behalf of www-data.

[UltimateBrent]

Thanks!