Per irc today. I confirmed I did not run out of disk space on the vm. I have 11G free of 15. I have 2 GB of RAM, I'm not sure if that is the problem or not. Below are five last-many-lines of logs of failures of tor-browser:
http://pastebin.com/LyMRhKdV http://pastebin.com/mRMP2FVH http://pastebin.com/8L3cFMU5 http://pastebin.com/D7eLB65y http://filebin.ca/23mLDScVCsKJ/build.log (most recent, full log)
-tom