serde_json_bug.rs

extern crate serde_json;

fn main() {
    decode_json();
}

fn decode_json() -> Result<(), ()> {
    // This works: let json: serde_json::Value = serde_json::from_str("[{}]").map_err(|error| {
    // The below does not
    let json = serde_json::from_str("[{}]").map_err(|error| {
            println!("Error while decoding JSON: {:?}", error);
        })?;

    println!("JSON from string: {:?}", json);

    Ok(())
}