This line make Rust errors and I cannot understand what does it mean

[jbe]

I don't really understand the lifetime problem above, but I wondered if it's a similar issue like this one that came up in another thread:

@quinedot

It inferred the cast to be a fn(&'local) -> bool instead of a for<'any> fn(&'any usize) -> bool, similar too the typical closure problem.

But I might be totally wrong.

I tried to use Box::leak to figure out if I can get the code to compile at least (it would not work, but that might help to find out what's the issue), but unfortunately, I cannot clone the tx or create a new one from within the non-async closure easily.

@frederikhors

Because the code is much more complicated in my real project, unfortunately.

Hmmm, I see.

---

What I mean is, I believe that the type Pin<Box<dyn Future<Output = Result<i64, String>> + Send>>, which I used in my example, doesn't work because dyn without lifetime means dyn + 'static, I think. But the pinned boxed dyn Future has a lifetime that depends on the transaction and the string slice, and I don't know how to express that.