Fix structured log

[psteckler]

[2022-5-3 19:10:03.483424]Integration_test_cloud_engine__Stack_driver_log_engine: Error parsing log $error
$error = "(Failure\n "parse_exn: parser for id 27953f46376ba8abc0c61400e2c38f8b found, but failed when applied to arguments: sender = {\"Remote\":{\"host\":\"10.12.72.2\",\"libp2p_port\":10909,\"peer_id\":\"12D3KooWLseBfHjwwZ45yVDo5XK6UBRbrtptc8XxAXyCWRgvYBPp\"}},work = {\"fee\":\"0.0001\",\"prover\":\"B62qiy32p8kAKnny8ZFwoMhYpBppM1DWVCqAPBYNcXnsAHhnfAAuXgg\",\"work\":[\"Two\",{\"fee_excess\":[{\"amount\":{\"magnitude\":\"2\",\"sgn\":[\"Neg\"]},\"token\":\"1\"},{\"amount\":{\"magnitude\":\"0\",\"sgn\":[\"Pos\"]},\"token\":\"1\"}],\"next_available_token_after\":\"2\",\"next_available_token_before\":\"2\",\"pending_coinbase_stack_state\":{\"source\":{\"data\":\"4QPi4MdpCYg7KwX4KgXSRuCkEy6STRnTgv9v6asQg5rYjmfC4Xbk\",\"state\":{\"curr\":\"4YyzaBR3kaQpPaB32QPtgHUP58a4WiBdLp9QsHAE9Ps1wBkeRS6f\",\"init\":\"4YxitRD78hmymbXF5xDrWqCaXA6SC9GvT1ogdcXK3eGtxnaRZGgG\"}},\"target\":{\"data\":\"4QNrTz1yeEuTsEtEnu7gK2WWQkTBYDuj6oiqL14H24SGoHbQfUMm\",\"state\":{\"curr\":\"4YyzaBR3kaQpPaB32QPtgHUP58a4WiBdLp9QsHAE9Ps1wBkeRS6f\",\"init\":\"4YxitRD78hmymbXF5xDrWqCaXA6SC9GvT1ogdcXK3eGtxnaRZGgG\"}}},\"sok_digest\":null,\"source\":\"jxXjyFhX3dL8392FCEA6g5cf4GFotFogkFYNVg1WTBx17PMdjEy\",\"supply_increase\":\"1440000000000\",\"target\":\"jx7Tx8qxjCBSLRZCHWxhtUqHAhJZatJiKpNX5DrkSxbaTaF3jia\"},{\"fee_excess\":[{\"amount\":{\"magnitude\":\"0\",\"sgn\":[\"Pos\"]},\"token\":\"1\"},{\"amount\":{\"magnitude\":\"0\",\"sgn\":[\"Pos\"]},\"token\":\"1\"}],\"next_available_token_after\":\"2\",\"next_available_token_before\":\"2\",\"pending_coinbase_stack_state\":{\"source\":{\"data\":\"4QPi4MdpCYg7KwX4KgXSRuCkEy6STRnTgv9v6asQg5rYjmfC4Xbk\",\"state\":{\"curr\":\"4YxoN9f6uH6oQNqY6dPjaQ4cFPZh4Yb5NNKbdaFotLxac5FRAgRW\",\"init\":\"4YxoN9f6uH6oQNqY6dPjaQ4cFPZh4Yb5NNKbdaFotLxac5FRAgRW\"}},\"target\":{\"data\":\"4QNrTz1yeEuTsEtEnu7gK2WWQkTBYDuj6oiqL14H24SGoHbQfUMm\",\"state\":{\"curr\":\"4Yyp1vxdeJMp3GKmNCyCwz7Zh4tkcDBVPRLvaXz199W3bD3f3vPG\",\"init\":\"4YxoN9f6uH6oQNqY6dPjaQ4cFPZh4Yb5NNKbdaFotLxac5FRAgRW\"}}},\"sok_digest\":null,\"source\":\"jwYnD2qfByox1VYWZ35MxUgcxDSY4eehMrSNLVACVboBWybBS5n\",\"supply_increase\":\"1440000000000\",\"target\":\"jwQMB58jK6mEMa7fuqfjLf4MoqukPHRqigTn3QTGe5SDHVmeVw3\"}]}")"

[psteckler]

Fixed.