I've asked Claude to implement a Rust port of JS library given source code in another directory: there's already one such implementation in OSS, mine. Result?
AI blatantly plagiarised my OSS code, including parts that were not present in source it was pointed to port.
Upon prohibiting it to touch outside implementations and focus on translating local directory... it ignored command and plagiarised my work again. It did the same with C# port and one existing impl.

