How should I use dependencies of dependencies? - rust

Question

I'm working on project using warp. Warp includes the bytes cargo as a dependency and I want to use the Bytes struct that gets passed into the callback. Here's an example:
use warp::Filter;
fn process(data: bytes::Bytes) -> impl warp::reply::Reply {
println!("{:?}", data);
"processed!"
}
#[tokio::main]
async fn main() {
let process = warp::path("process")
.and(warp::post())
.and(warp::body::bytes())
.map(process);
warp::serve(process)
.run(([127, 0, 0, 1], 3030))
.await;
}
Here's the dependencies in my Cargo.toml:
[dependencies]
bytes = "*"
tokio = { version = "0.2", features = ["full"] }
warp = "0.2"
This setup gives me this error:
error[E0631]: type mismatch in function arguments
--> src/main.rs:13:14
|
3 | fn process(data: bytes::Bytes) -> impl warp::reply::Reply {
| --------------------------------------------------------- found signature of `fn(bytes::bytes::Bytes) -> _`
...
13 | .map(process);
| ^^^^^^^ expected signature of `fn(bytes::bytes::Bytes) -> _`
|
= note: required because of the requirements on the impl of `warp::generic::Func<(bytes::bytes::Bytes,)>` for `fn(bytes::bytes::Bytes) -> impl warp::reply::Reply {process}`
Not a big fan of this error message because it's telling me that it's looking for the signature fn(bytes::bytes::Bytes) -> _ and it found fn(bytes::bytes::Bytes) -> _ which pretty much look exactly the same to me, but after some searching I realized it's because there's two different versions of Bytes getting pulled in, so I adjust my Cargo.toml like this:
bytes = "0.5.6"
So I get the same version of bytes that warp is pulling in.
Is this the conventional way to deal with this issue?