You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: build.rs
    path of file: ./repos/LibAFL/fuzzers/libfuzzer_stb_image
    
    the code of the file until where you have to start completion: // build.rs

use std::env;

fn main() {
    let out_dir = env::var_os("OUT_DIR").unwrap();
    let out_dir = out_dir.to_string_lossy().to_string();

    println!("cargo:rerun-if-changed=harness.c");

    // Enforce clang for its -fsanitize-coverage support.
    std::env::set_var("CC", "clang");
    std::env::set_var("CXX", "clang++");

    cc::Build::new()
        // Use sanitizer coverage to track the edges in the PUT
        .flag("-fsanitize-coverage=trace-pc-guard,trace-cmp")
        // Take advantage of LTO (needs lld-link set in your cargo config)
  
    
fn main() {
    let out_dir = env::var_os("OUT_DIR").unwrap();
    let out_dir = out_dir.to_string_lossy().to_string();

    println!("cargo:rerun-if-changed=harness.c");

    // Enforce clang for its -fsanitize-coverage support.
    std::env::set_var("CC", "clang");
    std::env::set_var("CXX", "clang++");

    cc::Build::new()
        // Use sanitizer coverage to track the edges in the PUT
        .flag("-fsanitize-coverage=trace-pc-guard,trace-cmp")
        // Take advantage of LTO (needs lld-link set in your cargo config)
        //.flag("-flto=thin")
        .flag("-Wno-sign-compare")
        .file("./harness.c")
        .compile("harness");

    println!("cargo:rustc-link-search=native={}", &out_dir);

    println!("cargo:rerun-if-changed=build.rs");
}