Duplicate coinbase transactions reported in wallet

[et4te]

Using the latest master, running grin wallet txs after mining for a while shows two transactions created at exactly the same time.

---------------------------------------------------------------------------------------------------------------------------------------------------------
 Id  Type        Shared Transaction Id  Creation Time        Confirmed?  Confirmation Time    Num.    Num.     Amount    Amount   Fee   Net         Tx  
                                                                                              Inputs  Outputs  Credited  Debited        Difference  Data 
=========================================================================================================================================================
 0   Confirmed   None                   2018-11-10 20:48:19  true        2018-11-10 20:48:19  0       1        60.0      0.0      None  60.0        None 
     Coinbase                                                                                                                                        
---------------------------------------------------------------------------------------------------------------------------------------------------------
 1   Confirmed   None                   2018-11-10 23:44:16  true        2018-11-10 23:44:16  0       1        60.0      0.0      None  60.0        None 
     Coinbase                                                                                                                                        
---------------------------------------------------------------------------------------------------------------------------------------------------------
 2   Confirmed   None                   2018-11-10 23:44:16  true        2018-11-10 23:44:16  0       1        60.0      0.0      None  60.0        None 
     Coinbase               

Here is the server log at 23:44 when the duplicate tx was reportedly recorded.

20181110 23:44:05.134 DEBUG grin_servers::mining::mine_block - get_coinbase: BlockFees { fees: 0, height: 33948, key_id: Some(Identifier(0300000000000000000000000200000000)) }
20181110 23:44:05.136 DEBUG grin_servers::mining::mine_block - Built new block with 0 inputs and 1 outputs, network difficulty: 25823, cumulative difficulty 1919254176
20181110 23:44:05.137 DEBUG grin_servers::mining::stratumserver - (Server ID: StratumServer) sending block 33948 with id 10 to stratum clients
20181110 23:44:10.579 DEBUG grin_servers::grin::seed - monitor_peers: on 0.0.0.0:13414, 10 connected (9 most_work). all 247 = 12 healthy + 0 banned + 235 defunct
20181110 23:44:20.117 DEBUG grin_servers::mining::mine_block - get_coinbase: BlockFees { fees: 0, height: 33948, key_id: Some(Identifier(0300000000000000000000000200000000)) }
20181110 23:44:20.119 DEBUG grin_servers::mining::mine_block - Built new block with 0 inputs and 1 outputs, network difficulty: 25823, cumulative difficulty 1919254176
20181110 23:44:20.119 DEBUG grin_servers::mining::stratumserver - (Server ID: StratumServer) sending block 33948 with id 11 to stratum clients
20181110 23:44:30.581 DEBUG grin_servers::grin::seed - monitor_peers: on 0.0.0.0:13414, 10 connected (9 most_work). all 247 = 12 healthy + 0 banned + 235 defunct
20181110 23:44:35.205 DEBUG grin_servers::mining::mine_block - get_coinbase: BlockFees { fees: 0, height: 33948, key_id: Some(Identifier(0300000000000000000000000200000000)) }
20181110 23:44:35.206 DEBUG grin_servers::mining::mine_block - Built new block with 0 inputs and 1 outputs, network difficulty: 25823, cumulative difficulty 1919254176
20181110 23:44:35.206 DEBUG grin_servers::mining::stratumserver - (Server ID: StratumServer) sending block 33948 with id 12 to stratum clients
20181110 23:44:50.185 DEBUG grin_servers::mining::mine_block - get_coinbase: BlockFees { fees: 0, height: 33948, key_id: Some(Identifier(0300000000000000000000000200000000)) }
20181110 23:44:50.188 DEBUG grin_servers::mining::mine_block - Built new block with 0 inputs and 1 outputs, network difficulty: 25823, cumulative difficulty 1919254176
20181110 23:44:50.188 DEBUG grin_servers::mining::stratumserver - (Server ID: StratumServer) sending block 33948 with id 13 to stratum clients
20181110 23:44:50.585 DEBUG grin_servers::grin::seed - monitor_peers: on 0.0.0.0:13414, 10 connected (9 most_work). all 247 = 12 healthy + 0 banned + 235 defunct
20181110 23:44:52.809 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.809 DEBUG grin_p2p::peer - Requesting tx (kernel hash) 1706176f from peer 94.130.64.25:13414.
20181110 23:44:52.830 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.830 DEBUG grin_p2p::peer - Requesting tx (kernel hash) 1706176f from peer 54.38.70.127:13414.
20181110 23:44:52.842 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.842 DEBUG grin_p2p::peer - Requesting tx (kernel hash) 1706176f from peer 167.99.87.54:13414.
20181110 23:44:52.855 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.855 DEBUG grin_p2p::peer - Requesting tx (kernel hash) 1706176f from peer 109.74.202.16:13414.
20181110 23:44:52.858 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.859 DEBUG grin_p2p::peer - Requesting tx (kernel hash) 1706176f from peer 89.101.91.246:13414.
20181110 23:44:52.863 DEBUG grin_p2p::protocol - handle_payload: received tx: msg_len: 1638
20181110 23:44:52.864 DEBUG grin_servers::common::adapters - Received tx c0565497, inputs: 1, outputs: 2, kernels: 1, going to process.
20181110 23:44:52.877 DEBUG grin_pool::pool - add_to_pool [txpool]: c0565497 (p2p), in/out/kern: 1/2/1, pool: 0 (at block 0556b9d2)
20181110 23:44:52.878 DEBUG grin_p2p::protocol - handle_payload: received tx: msg_len: 1638
20181110 23:44:52.878 DEBUG grin_servers::common::adapters - Received tx c0565497, inputs: 1, outputs: 2, kernels: 1, going to process.
20181110 23:44:52.878 DEBUG grin_p2p::peer - Send full tx c0565497 to 204.48.26.36:13414
20181110 23:44:52.879 DEBUG grin_p2p::peer - Not sending tx c0565497 to 89.101.91.246:13414 (already seen)
20181110 23:44:52.879 DEBUG grin_p2p::peer - Send full tx c0565497 to 128.1.49.43:13414
20181110 23:44:52.879 DEBUG grin_p2p::peer - Not sending tx c0565497 to 109.74.202.16:13414 (already seen)
20181110 23:44:52.879 DEBUG grin_p2p::peer - Not sending tx c0565497 to 167.99.87.54:13414 (already seen)
20181110 23:44:52.879 DEBUG grin_p2p::peer - Send full tx c0565497 to 81.30.158.213:13414
20181110 23:44:52.879 DEBUG grin_p2p::peer - Send full tx c0565497 to 198.245.50.26:13414
20181110 23:44:52.879 DEBUG grin_p2p::peer - Not sending tx c0565497 to 54.38.70.127:13414 (already seen)
20181110 23:44:52.879 DEBUG grin_p2p::peer - Not sending tx c0565497 to 94.130.64.25:13414 (already seen)
20181110 23:44:52.879 DEBUG grin_p2p::peer - Send full tx c0565497 to 80.211.155.34:13414
20181110 23:44:52.879 DEBUG grin_p2p::peers - broadcast_transaction: c0565497 to 5 peers, done.
20181110 23:44:52.879 DEBUG grin_pool::transaction_pool - added tx to reorg_cache: size now 87
20181110 23:44:52.879 DEBUG grin_servers::common::adapters - Transaction c0565497 rejected: DuplicateTx
20181110 23:44:52.894 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.900 DEBUG grin_p2p::protocol - handle_payload: received tx: msg_len: 1638
20181110 23:44:52.900 DEBUG grin_servers::common::adapters - Received tx c0565497, inputs: 1, outputs: 2, kernels: 1, going to process.
20181110 23:44:52.900 DEBUG grin_servers::common::adapters - Transaction c0565497 rejected: DuplicateTx
20181110 23:44:52.909 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.914 DEBUG grin_p2p::protocol - handle_payload: received tx: msg_len: 1638
20181110 23:44:52.914 DEBUG grin_servers::common::adapters - Received tx c0565497, inputs: 1, outputs: 2, kernels: 1, going to process.
20181110 23:44:52.914 DEBUG grin_servers::common::adapters - Transaction c0565497 rejected: DuplicateTx
20181110 23:44:52.937 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32
20181110 23:44:52.940 DEBUG grin_p2p::protocol - handle_payload: received tx: msg_len: 1638
20181110 23:44:52.941 DEBUG grin_servers::common::adapters - Received tx c0565497, inputs: 1, outputs: 2, kernels: 1, going to process.
20181110 23:44:52.941 DEBUG grin_servers::common::adapters - Transaction c0565497 rejected: DuplicateTx
20181110 23:44:53.035 DEBUG grin_p2p::protocol - handle_payload: received tx kernel: 1706176f, msg_len: 32

[yeastplume]

please reopen if you see this on mainnet