How do I fix "borrowed value does not live long enough" from serde_json::from_slice without incurring a memory leak?

Consider the following piece of code:

pub async fn parse_bytes<'a, R: Deserialize<'a>>(_query: serde_json::Value) -> R {
    let result: Vec<u8> = vec![]; // fetch_result(&query).await

    serde_json::from_slice::<R>(result.as_slice())
        .expect("Can't parse bytes response")
}

Error

It doesn’t compile:

`result` does not live long enough
borrowed value does not live long enough

Tentative solution

Providing result.leak() instead works, but I’m not sure it’s the right solution: the method’s documentation recites:

This function is mainly useful for data that lives for the remainder of the program’s life. Dropping the returned reference will cause a memory leak

And the returned reference is dropped as soon as the function ends.

Question

How do I fix the above without incurring a memory leak?

>Solution :

Use DeserializeOwned instead.

use serde::de::DeserializeOwned;

pub async fn parse_bytes<R: DeserializeOwned>(_query: serde_json::Value) -> R {
    let result: Vec<u8> = vec![]; // fetch_result(&query).await

    serde_json::from_slice::<R>(result.as_slice())
        .expect("Can't parse bytes response")
}