How can I determine whether or not ResponseBodyTimeoutLayer timed out?

[mherrerarendon]

Summary

I'm building an application using axum and I was hoping to use ResponseBodyTimeoutLayer.
I tried something like the following

Router::new()
    ...
    .layer(ResponseBodyTimeoutLayer::new(Duration::from_nanos(1)))

which does timeout the body, but my response status code is unchanged. I'm trying to figure out how to handle the body timeout (change status, etc), but I'm not having any luck.
Any help is appreciated, thanks in advance!

tower-http version

0.6.1

[jplatte]

This may not be all that helpful, but note that the status code is already sent by the time the body timeout happens. That's why it's unchanged.