Bug in Rdmd?

[Jonathan Marler via Digitalmars-d-learn]

This code doesn't seem to work with rdmd.  Is this a bug?

   import std.stdio : byLine;
   int main(string[] args)
   {
     foreach(line; stdin.byLine) {
     }
     return 0;
   }

Compiler Output:
   Error: module std.stdio import 'byLine' not found