Why is this increasing memory consumption on every iteration?

[Geancarlo Rocha]

On Sunday, 16 June 2013 at 02:12:02 UTC, Geancarlo Rocha wrote:
> I expected the memory to ramp up in the first couple iterations 
> and eventually reach a stable point, but for some reason, 
> windows task manager shows it increases on every iteration. 
> Compiling with -m64 doesn't seem to change this issue.
>
> http://pastebin.com/G5JXR9AA

I think it is safe to assume the current GC is unreliable, booo!