Worked at first. Now, it only answers the initial question I asked, and doesn't respond to any follow-up questions. It occasionally starts spitting out nonsense and creating code that doesn't meet the requirements specified by the initial query. No way to report bugs through the website.
Used with Rust language, provide pretty good code, correction and autocomplete to prototype quickly. Not yet enough for a clean code, extra performance tweaks or edge cases, but better than some other coding AI.