>From what I understand from [the source of the >error](https://github.com/nim-lang/Nim/blob/9502e39b634eea8e04f07ddc110b466387f42322/compiler/lambdalifting.nim#L917), > now the call to the iterator is no more considered to be in a `for` loop.
Again `nim check` accepts the code while it does not compile.
