I really don't know how to solve this problem

[NOVA-ME]

only the get_captcha method can't add to router, ervery thing else is fine.
And I want to ask there have the axum telegram group or other place, that I can ask for some question

[davidpdrsn]

Try to isolate which part of the function makes it not work

• Replace the body of the function with todo!().
• If that works then try and remove each of the lines until you find which line might be causing it. Note that handlers must return futures that are Send, but that doesn't seem to be an issue here.
• If it doesn't work then try changing the return type to simply () or (StatusCode, HeaderMap, Vec<u8>). Maybe AppResult's error type doesn't implement IntoResponse?

[NOVA-ME]

Which library does redis_get come from?

redis crate
r2d2 crate

[davidpdrsn]

Hm alright. I'm not familiar enough with those crates to know. It would seem somewhere a !Send future shows up, which axum doesn't support.

[NOVA-ME]

Hm alright. I'm not familiar enough with those crates to know. It would seem somewhere a !Send future shows up, which axum doesn't support.

Thank you so much. The axum 0.2 is quite nice.

[mineralres]

@davidpdrsn @jkristell I got the similar problem, please check my code if you have time, thanks.

#299

[davidpdrsn]

@mineralres You don't need to ping me twice.

[jkristell]

Had a similar problem. The problem was the RwLockWriteGuard from std::sync (it is !Send). Switching to RwLock from tokio solved my problem.