Cargo and blake version clash

WARNING: IMPORTANT: Protect Your Crypto from Scammers **1) Please READ this post to stay safe:** https://www.reddit.com/r/solana/comments/… **2) NEVER trust DMs** from anyone offering “help” or “support” with your funds — they are scammers. **3) NEVER share your wallet’s Seed Phrase or Private Key.** Do not copy & paste them into any websites or Telegram bots sent to you. **4) IGNORE comments claiming they can help you** by sharing random links or asking you to DM them. **5) Mods and Community Managers will NEVER DM you first** about your wallet or funds. **6) Keep Price Talk in the Stickied Weekly Thread** located under the “Community” section on the right sidebar. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/solana) if you have any questions or concerns.*

Took me forever to figure out too. For me the issue was I didn't had the right feature flags set in Cargo.toml, check if you got the solana-program crate with blake3 feature enabled. The version mismatch is super annoying cause the error messages dont tell you nothing useful.

blake is precisely the problem. It has a 2021 version and 2024 version, latest cargo version is rejecting the 2024 version, while I'm unable to revert to the 2021 version. It's extremely testy LOL. I need to submit this very simple contract for a hackathon and this is becoming the biggest hurdle LOL.

Update solved and thanks for the pointer 💯