log4rs错误log4rs(OS代码:2,类型:NotFound,消息:“无此类文件或目录”)

我试图通过以下方法实现log4rs the docs . 我的目标是把 info!("INFO") 进入文件requests.log,但我得到一个错误:

线程'main'在调用' Result::unwrap() 关于一个 Err 值:log4rs(os code:2,kind:notfound,message:“no such file or 目录“”),libcore/result.rs:945:5

我在SRC文件夹中有以下文件:

- main.rs
- log4rs.yml
- requests.log

主要风险:

#[macro_use]
extern crate log;
extern crate log4rs;

fn main() {
    println!("Hello, world!");
    log4rs::init_file("log4rs.yml", Default::default()).unwrap();
    info!("INFO");
}

配置文件log4rs.yml:

# Scan this file for changes every 30 seconds
refresh_rate: 30 seconds

appenders:
  # An appender named "stdout" that writes to stdout
  stdout:
    kind: console

  # An appender named "requests" that writes to a file with a custom pattern encoder
  requests:
    kind: file
    path: "requests.log"
    encoder:
      pattern: "{d} - {m}{n}"

# Set the default logging level to "warn" and attach the "stdout" appender to the root
root:
  level: warn
  appenders:
    - stdout

loggers:
  # Raise the maximum log level for events sent to the "app::backend::db" logger to "info"
  app::backend::db:
    level: info

  # Route log events sent to the "app::requests" logger to the "requests" appender,
  # and *not* the normal appenders installed at the root
  app::requests:
    level: info
    appenders:
      - requests
    additive: false