Error when running oura dump since slot 66137366

[pedromtcosta]

I am running into an error when running oura dump from slot 66137366, block 19e2b9f3943874d021d420e65841d6ba12db2b533ea46e5efcf6254e910d8717. I am running Oura 1.5.1:

> oura --version
oura 1.5.1

And this is the command and the error I am getting:

> oura dump relays-new.cardano-mainnet.iohk.io:3001 --bearer tcp --since 66137366,19e2b9f3943874d021d420e65841d6ba12db2b533ea46e5efcf6254e910d8717
{"context":{"block_hash":null,"block_number":null,"certificate_idx":null,"input_idx":null,"output_address":null,"output_idx":null,"slot":null,"timestamp":null,"tx_hash":null,"tx_idx":null},"fingerprint":null,"roll_back":{"block_hash":"19e2b9f3943874d021d420e65841d6ba12db2b533ea46e5efcf6254e910d8717","block_slot":66137366}}
{"block":{"body_size":842,"cbor_hex":null,"epoch":350,"epoch_slot":300571,"era":"Alonzo","hash":"04ed1b98a1f0d6d8c43dc96c42f5d792aeb615892c1005b6c773d239e63f9e9a","issuer_vkey":"2cbecc1f6b1153847f80b5a4d827f73121fac05b63484f8c254f2b96d3e978e9","number":7492516,"previous_hash":"19e2b9f3943874d021d420e65841d6ba12db2b533ea46e5efcf6254e910d8717","slot":66137371,"transactions":null,"tx_count":2},"context":{"block_hash":"04ed1b98a1f0d6d8c43dc96c42f5d792aeb615892c1005b6c773d239e63f9e9a","block_number":7492516,"certificate_idx":null,"input_idx":null,"output_address":null,"output_idx":null,"slot":66137371,"timestamp":1657703662,"tx_hash":null,"tx_idx":null},"fingerprint":null}
{"context":{"block_hash":"04ed1b98a1f0d6d8c43dc96c42f5d792aeb615892c1005b6c773d239e63f9e9a","block_number":7492516,"certificate_idx":null,"input_idx":null,"output_address":null,"output_idx":null,"slot":66137371,"timestamp":1657703662,"tx_hash":"13ac79a68317eb2f67f3224e2eb9fcad7d8b70d202b998af20dd6cce881087ef","tx_idx":0},"fingerprint":null,"transaction":{"fee":2718281,"hash":"13ac79a68317eb2f67f3224e2eb9fcad7d8b70d202b998af20dd6cce881087ef","input_count":1,"inputs":null,"metadata":null,"mint":null,"mint_count":0,"native_witnesses":null,"network_id":null,"output_count":1,"outputs":null,"plutus_data":null,"plutus_redeemers":null,"plutus_witnesses":null,"total_output":7281719,"ttl":null,"validity_interval_start":null,"vkey_witnesses":null}}
{"context":{"block_hash":"04ed1b98a1f0d6d8c43dc96c42f5d792aeb615892c1005b6c773d239e63f9e9a","block_number":7492516,"certificate_idx":null,"input_idx":0,"output_address":null,"output_idx":null,"slot":66137371,"timestamp":1657703662,"tx_hash":"13ac79a68317eb2f67f3224e2eb9fcad7d8b70d202b998af20dd6cce881087ef","tx_idx":0},"fingerprint":null,"tx_input":{"index":0,"tx_id":"f79ff39a3c11d829279fe4c8cc4ebe40ab2e500e60a1ab43f59290679bed8be1"}}
{"context":{"block_hash":"04ed1b98a1f0d6d8c43dc96c42f5d792aeb615892c1005b6c773d239e63f9e9a","block_number":7492516,"certificate_idx":null,"input_idx":null,"output_address":null,"output_idx":0,"slot":66137371,"timestamp":1657703662,"tx_hash":"13ac79a68317eb2f67f3224e2eb9fcad7d8b70d202b998af20dd6cce881087ef","tx_idx":0},"fingerprint":null,"tx_output":{"address":"addr1vyrceuygx8cgd4fe8lhqd8wpf0a5ztwzcq2a99g367wm30q7wj22w","amount":7281719,"assets":[],"datum_hash":null}}
thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: Error("can only flatten structs and maps (got an enum)", line: 0, column: 0)', src/sinks/stdout/run.rs:16:19
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
ERROR: "error in sink thread"

In fact, I get this error when trying to start Oura from any slot after 66137366 as well, for example, running any of the bellow commands results in the same error:

oura dump relays-new.cardano-mainnet.iohk.io:3001 --bearer tcp --since 66137371,04ed1b98a1f0d6d8c43dc96c42f5d792aeb615892c1005b6c773d239e63f9e9a
oura dump relays-new.cardano-mainnet.iohk.io:3001 --bearer tcp --since 66137373,a312cbeedc1843110646e838bc931f5d2e07df63749d8dc9c1f4d5b2d08fe832
oura dump relays-new.cardano-mainnet.iohk.io:3001 --bearer tcp --since 66137384,6c00532fdfebf2b4f79fa94f6cb155d72ec57f0f0e6de0652164a1b2b28e49cf

The problem doesn't seem to happen when running oura watch ...

[scarmuega]

Thanks for reporting @pedromtcosta!

It turns out that this is the 1st time we encounter an event of type GenesisKeyDelegation. There's a bug in Oura which breaks the json serialization of these type of events.

I'll work on a hotfix ASAP, but in the meantime, a workaround would be to skip these type of events by using the Selection filter.

[pedromtcosta]

Thank you @scarmuega ! I just tested 1.5.2 and it works now 👍