how can I get this code to compile? https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=382e6a927c23ceb451739ea8eb7bf2a3
I tried calling flatten on the iterator, but that turns Result<Option<T>> into Option<T>, which I don't want - I want Result<T>
#flatten iterator of results
barren tulip
urban estuary
remove the Some()? 
barren tulip
ok here is the actual function I am trying to get to compile https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=783e36dd7275a2683ed55bcb566d0c2b
I need to add Some so I can skip custom toolchains
and I can't return Option<Result<T, E>> because then I can no longer use ? in the closure and it's ugly
apparently I wanted .filter_map(|x| x.transpose()) https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=361398cf681d6c6f01a6819cd417da10