trace_block API can't decode return value

[rvagg]

From an ecosystem partner, I'm capturing this while it's fresh:

{"level":"warn","ts":"2024-11-28T11:01:34.473+1100","logger":"rpc","caller":"[email protected]/handler.go:474","msg":"error in RPC call to 'Filecoin.EthTraceBlock': failed building traces for msg bafy2bzacectxklaz54fxrxkkzrbgbk7tvbm3jdikgyxgo6dinukrge6khnwqu:
    github.com/filecoin-project/lotus/node/impl/full.(*EthModule).EthTraceBlock
        /home/rvagg/go/src/github.com/filecoin-project/lotus/node/impl/full/eth.go:1102
  - at trace []:
    github.com/filecoin-project/lotus/node/impl/full.buildTraces
        /home/rvagg/go/src/github.com/filecoin-project/lotus/node/impl/full/eth_trace.go:169
  - EAM called with invalid params or returned an invalid result, but it still tried to construct the contract:
    github.com/filecoin-project/lotus/node/impl/full.traceEthCreate
        /home/rvagg/go/src/github.com/filecoin-project/lotus/node/impl/full/eth_trace.go:489
  - failed to decode return value:
    github.com/filecoin-project/lotus/node/impl/full.decodeReturn[...]
        /home/rvagg/go/src/github.com/filecoin-project/lotus/node/impl/full/eth_trace.go:74
  - cbor input should be of type array"}

Using a 1.30.0 calibnet node with:

curl -s -X POST -H "Content-Type: application/json" --data '{"method":"Filecoin.EthTraceBlock","params":["0x1c6b63"],"id":2,"jsonrpc":"2.0"}' http://127.0.0.1:1235/rpc/v1

[rvagg]

Block is bafy2bzacectxklaz54fxrxkkzrbgbk7tvbm3jdikgyxgo6dinukrge6khnwqu and it's a revert on EAM Create. https://calibration.filfox.info/en/message/bafy2bzacectxklaz54fxrxkkzrbgbk7tvbm3jdikgyxgo6dinukrge6khnwqu?t=1

Fixed in #12730