Code example in std.parallelism fails to compile

[Robert burner Schadek via Digitalmars-d]

Not that I know of, https://github.com/dlang/phobos/pull/4399. I 
think std.parallelism was designed around a D feature that was 
more a bug than a feature. This bug/feature seamed to be fixed 
some years ago. But I'm not 100%, as this was before my time.