如何在Rust的日志输出中添加特定的前缀？

[dependencies]
log = "0.4"
env_logger = "0.9"

#[macro_use]
extern crate log;

use env_logger::Env;

fn main() {
    // 初始化日志记录器
    env_logger::Builder::from_env(Env::default().default_filter_or("info")).init();

    // 设置日志输出的前缀
    log::set_boxed_logger(Box::new(PrefixLogger)).unwrap();
    log::set_max_level(log::LevelFilter::Info);

    // 输出日志
    info!("这是一条带有前缀的日志信息");
}

struct PrefixLogger;

impl log::Log for PrefixLogger {
    fn enabled(&self, metadata: &log::Metadata) -> bool {
        metadata.level() <= log::max_level()
    }

    fn log(&self, record: &log::Record) {
        if self.enabled(record.metadata()) {
            println!("[前缀] {} - {}", record.level(), record.args());
        }
    }

    fn flush(&self) {}
}