Vine video downloads correctly...but "WARNING: unable to extract OpenGraph description; please report this issue...."

[RingoTheDog]

As the subject states I don't see an issue with the result...the video downloads and is playable.
However, it requested that I report this...so here it is:

youtube-dl.py -v "https://vine.co/v/emIQtuzb0DV"
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'https://vine.co/v/emIQtuzb0DV']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2015.05.10
[debug] Python version 2.7.6 - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg N-71727-g46778ab, rtmpdump 2.4
[debug] Proxy map: {}
[Vine] emIQtuzb0DV: Downloading webpage
WARNING: unable to extract OpenGraph description; please report this issue on ht
tps://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'http://mtc.cdn.vine.co/r/videos/F7F048E4F512093
73260753043456_3077c59c32c.3.1.16050232298661146120.mp4?versionId=.hYe_sNVHBG8N9
nDiyfnTkG7Tt_f8CIB'
[download] Destination: Vine by DARius-emIQtuzb0DV.mp4
[download] 100% of 840.25KiB in 00:00