bug: just devnet-fault error

[samlaf]

Running through README devnet steps on master branch.

$ just devnet-fault
./target/release/kailua-cli test-fault --registry-contract 0xd801426328C609fCDe6E3B7a5623C27e8F607832 --l1-node-address http://127.0.0.1:8545 --l1-beacon-address http://127.0.0.1:5052 --op-node-address http://127.0.0.1:7545 --proposer-key 0x47e179ec197488593b187f80a00eb0da91f1b9d0b13f8733639f19c30a34926a --fault-offset 1 --fault-parent 1 
2024-12-17T22:05:18.299097Z ERROR kailua_cli::fault: Failed to send faulty proposal txn: propose (send)

Caused by:
    server returned an error response: error code 3: execution reverted, data: "0x1ebb374b00000000000000000000000000000000000000000000000000000000000000fe0000000000000000000000000000000000000000000000000000000000000539"

[hashcashier]

Thanks for pointing this out.

This command seems to have two bad default values set in the justfile:

devnet-fault offset="1" parent="1" 

It should work if you call it without these defaults and use your own values as follows:

just devnet-fault BAD_PROPOSAL_OFFSET PARENT_PROPOSAL_INDEX

BAD_PROPOSAL_OFFSET is the 1-indexed position of the bad output in the proposal. It can be any value between 1 and your number of blocks per proposal.

PARENT_PROPOSAL_INDEX is the DisputeGameFactory game index of the parent proposal to extend.

[samlaf]

@hashcashier thanks! Why was it working before and not anymore? Did something change in the contracts themselves, or just the CLI code?

[hashcashier]

Its code changed a lot for V2, and the fault inducer's logic was changed. Previously it just extended the latest proposal, but now you have to point it at a specific parent to extend.