Unknown opcode 192 - prestine contract code does not compile

[peetzweg]

After I upgraded my local installation of rust and cargo-contract, the cargo contract new contract does not build for me. I get the following error message:

ERROR: Loading of original wasm failed

Caused by:
    0: Loading of wasm module at '/Users/ppoloczek/fresh/target/ink/wasm32-unknown-unknown/release/fresh.wasm' failed
    1: Unknown opcode 192

I've updated my setup with these commands:
rustup update
cargo install --force --locked cargo-contract

I'm on these version now:

rustc 1.70.0 (90c541806 2023-05-31)
cargo 1.70.0 (ec8a8a0ca 2023-04-25)
cargo-contract 3.0.1-unknown-aarch64-apple-darwin

---

[peetzweg]

Works on rustc 1.69.0 .

[ascjones]

Yes you have to use 1.69

This is a duplicate of #1139

It's been fixed in #1189 (still to be released), but you would still need to use 1.69 because pallet-contracts also does not support that op code

[statictype]

just got this error today with 1.71 with an Apple M1 Max while compiling ERC20 (from the 4.2.1 tag).
switched to 1.69 and works fine.

cargo-contract 3.0.1-unknown-aarch64-apple-darwin

[statictype]

Ok, missed this part: still to be released