It likely does, at some point within the ellipsis.

Good job!

One tip, try this change:

if first_char != last_char {
    is_palindrome = false;
    break; // stop comparison
}

Best wishes in your Rust adventure!

Lately I use it for hobby projects, but also for academic stuff (e.g., interacting with experimental devices, sensors). Rust allows me to write fast code quickly while not spending a long time with valgrind.