$ cargo run
   Compiling arrays v0.1.0 (file:///projects/arrays)
    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
     Running `target/debug/arrays`
thread 'main' panicked at 'index out of bounds: the len is 5 but the index is 10', src/main.rs:5:19
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
