JSON serialization fails on structs with one field

[Kongō]

Attempting to serialize a struct with a single field results in an empty JSON object:

use nanoserde::{SerJson}; // v0.1.17

#[derive(SerJson)]
struct Broken {
    field: f32,
}

#[derive(SerJson)]
struct Works {
    field1: f32,
    field2: f32,
}

fn main() {
    let b = Broken {
        field: 0.1,
    };
    let w = Works {
        field1: 0.2,
        field2: 0.3,
    };
    println!("{}",b.serialize_json()); // Fails
    println!("{}",w.serialize_json()); // Succeeds
}

Compiling emits "warning: field is never read: field" on 'Broken'
Running prints

{}
{"field1":0.2,"field2":0.3}

[Fedor Logachev]

Thanks for the report!

Should be fixed in 0.1.18