Generic Associated Types broken on nightly?

What’s the deal here? The canonical “Streaming Iterator” example doesn’t compile on nightly:

https://play.rust-lang.org/?gist=d873f3c7205dba9a38e1545df1b40d16&version=nightly

1 Like

It might be better to open a thread in internals

Are they supposed to work on nightly? I didn’t think so. I think some basic syntax support is there but it’s incomplete (I may be wrong though).