1 use std::env; 2 use std::fs::File; 3 use std::io::prelude::*; 4 use std::path::PathBuf; 5 main() -> std::io::Result<()>6fn main() -> std::io::Result<()> { 7 let out_path = PathBuf::from(env::var("OUT_DIR").unwrap()); 8 let mut file = File::create(out_path.join("test_content.txt"))?; 9 file.write_all(b"Test content")?; 10 Ok(()) 11 } 12