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: temp_dir.rs
    path of file: ./repos/quickwit/quickwit/quickwit-common/src
    
    the code of the file until where you have to start completion: // Copyright (C) 2024 Quickwit, Inc.
//
// Quickwit is offered under the AGPL v3.0 and as commercial software.
// For commercial licensing, contact us at hello@quickwit.io.
//
/
    
    fn test_directory_randomness() {
        let mut directories = Vec::new();
        let mut paths = Vec::new();
        let temp_dir = Builder::default().tempdir().unwrap();
        // Try creating the maximum number of directories for a single random byte
        // On case-insensitive filesystems we can only have 36 different directories a-z,0-9
        for _ in 0..36 {
            let dir = Builder::default()
                .join("test")
                .rand_bytes(1)
                .tempdir_in(temp_dir.path())
                .unwrap();
            assert_eq!(dir.path().parent().unwrap(), temp_dir.path());
            paths.push(dir.path().to_path_buf());
            directories.push(dir);
        }
        for path in paths.iter() {
            assert!(path.try_exists().unwrap());
        }
        drop(directories);
        for path in paths.iter() {
            assert!(!path.try_exists().unwrap());
        }
    }