std.experimental.allocator optlink error

[ref2401 via Digitalmars-d-learn]

Hello

I wrote a small hello world app and imported the 
`std.experimental.allocator` module.
I'm getting the following optlink error:
---------------------------------------------------
OPTLINK (R) for Win32  Release 8.00.17
Copyright (C) Digital Mars 1989-2013  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
console-app.obj(console-app)
Error 42: Symbol Undefined 
_D3std12experimental9allocator12__ModuleInfoZ
--- errorlevel 1
---------------------------------------------------
os: 		Windows 8.1 Enterprise
dmd: 		2.069.0
build sript: 	dmd main.d -ofconsole-app.exe -debug -unittest -wi

Thank you.