Install on windows with Anaconda error

I've heard reports that installing on Windows with Anaconda generates a `sorry, unimplemented: 64-bit mode not compiled in`error. [Here is the complete log.](https://gist.github.com/lkilcher/52c08a88f56d8e6cc02e) Has anyone else seen this? Has anyone tried [one of these solutions](http://stackoverflow.com/questions/8861105/gcc-sorry-unimplemented-64-bit-mode-not-compiled-in)?
