`Cargo.toml` downloaded from cartes.io does not have the required feature `runtime-tokio` set for `quinn`

[ouromoros]

So I'm trying to make http3 feature for reqwest package work. After some struglling with the RUSTFLAG configuration, I finally made the project compile with reqwest = { version = "0.11.18", features = ["http3"] }

Now the problem is when I try to initiate a client, it throws error: unable to create QUIC endpoint: Custom { kind: Other, error: "no async runtime found" }.

After some digging, the error happens in this code block in quinn package:

pub fn default_runtime() -> Option<Arc<dyn Runtime>> {
    #[cfg(feature = "runtime-tokio")]
    {
        if ::tokio::runtime::Handle::try_current().is_ok() {
            return Some(Arc::new(TokioRuntime));
        }
    }

    #[cfg(feature = "runtime-async-std")]
    {
        return Some(Arc::new(AsyncStdRuntime));
    }

    #[cfg(not(feature = "runtime-async-std"))]
    None
}

I double checked that ::tokio::runtime::Handle::try_current() does return an OK result. I then checked the Cargo.toml stored in local reqwest package, it seemed that quinn is missing the runtime-tokio feature that is supposed to be there:

[target."cfg(not(target_arch = \"wasm32\"))".dependencies.quinn]
version = "0.10"
features = [
    "tls-rustls",
    "ring",
]
optional = true
default-features = false

Honestly I have no clue what's going on here. In Github repo runtime-tokio is clearly set for quinn, yet the Cargo.toml from the downloaded package just does not have it. It could be that I'm doing something wrong here, but I really don't know it.

Also I'm on stable-x86_64-pc-windows-msvc (default) rustc 1.70.0 (90c541806 2023-05-31), not sure if that matters.

[seanmonstar]

A new version with the fix hasn't yet been published to crates.io. I'll publish one shortly.

You can fix your program sooner by depending on Quinn yourself, and enabling the feature.

[ouromoros]

@seanmonstar Thanks for the fast response! Just out of my curiosity, how did the problem occur?