Template bug with second mixin?

[Andre via Digitalmars-d-learn]

Hi,

following coding fails to compile with 2.066.0 and
2.067.0-b1.

This is a bug, or?
source\app.d(9): Error: mixin 
app.Data.insertReadMethods!("readTinyInt", ubyte)
is not defined

template insertReadMethods(string MethodName, DataType)
{
        enum insertReadMethods = "";
}

struct Data
{
        mixin insertReadMethods!("readTinyInt", ubyte);
        mixin insertReadMethods!("readTinyInt", ubyte);
}

void main(){}

Kind regards
André