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: test_aio_drop.rs
    path of file: ./repos/nix/test/sys
    
    the code of the file until where you have to start completion: // Test dropping an AioCb that hasn't yet finished.
// This must happen in its own process, because on OSX this test seems to hose
// the AIO subsystem and causes subsequent tests to fail
#[test]
#[should_panic(expected = "Dropped an in-progress AioCb")]
#[cfg(all(
    not(target_env = "musl"),
  
    
fn test_drop() {
    use nix::sys::aio::*;
    use nix::sys::signal::*;
    use std::os::unix::io::AsRawFd;
    use tempfile::tempfile;

    const WBUF: &[u8] = b"CDEF";

    let f = tempfile().unwrap();
    f.set_len(6).unwrap();
    let mut aiocb = Box::pin(AioWrite::new(
        f.as_raw_fd(),
        2, //offset
        WBUF,
        0, //priority
        SigevNotify::SigevNone,
    ));
    aiocb.as_mut().submit().unwrap();
}