Cross module conflict bug with private and public members?

[Gary Willoughby via Digitalmars-d]

import std.stdio;
import std.range;
import std.concurrency;
void main(string[] args)
{
        auto generator = new Generator!(int)({
                foreach (value; 1..10)
                {
                        yield(value);
                }
        });

        foreach (value; generator)
        {
                writeln(value);
        }
}

Compiled with `rdmd test.d`

test.d(41): Error: std.concurrency.Generator(T) at 
/usr/include/dmd/phobos/std/concurrency.d(1569) conflicts with 
std.range.Generator(Fun...) at /usr/include/dmd/phobos/std/rang
e/package.d(2806)

`std.concurrency.Generator` is public and `std.range.Generator` 
is private so surely these shouldn't conflict?