This odd bit of code emits an error from do_the_thing() saying T does not live long enough: use std::future::Future; trait Connection: Send { type ExecFut<'a>: Future<Output = ()> + S...

Recently, the post "The push for GATs stabilization" was published on the Rust blog. I'm interested in the LendingIterator trait but hit a problem when trying to use it. This is the defin...