error: reached the type-length limit while instantiating

std::pin::Pin::<&mut std::future...::Future>::poll::{{closure}}#0]>

— any advice on dealing with errors like that?

increase the type length limit

I saw that suggestion. That is okay to do?

it shouldn’t be affected by sideeffects, but it might be context specific

never mind, this recompile is where I boxed the stream in question

afaict, large types are an unsolved problem in the ecosystem. there are some changes to the compiler to make them smaller, and some folks introduce boxes to shrink things

ugh but

cargo build

when run from under src/rust/engine has the type-length issue