wrong log format when send stop signal to node

[wirwolf]

node version: 2.4.0
in config toml

# Output level for logging, including package level options
log_level = "consensus:info,main:info,state:info,*:error"
log_format = "json"
# Path to file for logs, "stdout" by default
log_path = "stdout"

when i send stop signal kill -15 {pid} node send plain text to stdout

I[2021-06-16|09:23:30.894] captured terminated, exiting...              module=consensus
2021/06/16 09:23:30 Stopping Node
2021/06/16 09:23:31 Node Stopped with error: <nil>

example log:

{"_msg":"executed block","height":3282856,"level":"info","module":"state","num_invalid_txs":0,"num_valid_txs":1,"ts":"2021-06-16T09:23:30.870960505Z"}
{"_msg":"committed state","app_hash":"E3C347328458DB9130680E0102F04AB6FB4DF6638BBED3FB16102FADEDB5466C","height":3282856,"level":"info","module":"state","num_txs":1,"ts":"2021-06-16T09:23:30.883035837Z"}
I[2021-06-16|09:23:30.894] captured terminated, exiting...              module=consensus 
{"_msg":"executed block","height":3282857,"level":"info","module":"state","num_invalid_txs":0,"num_valid_txs":1,"ts":"2021-06-16T09:23:30.897915863Z"}
{"_msg":"committed state","app_hash":"C8A374EF1A420605BEEAC04FC2E1C9A5AF72CEB136F50B93D4FF787A95AFBD98","height":3282857,"level":"info","module":"state","num_txs":1,"ts":"2021-06-16T09:23:30.910208528Z"}
2021/06/16 09:23:30 Stopping Node
{"_msg":"Stopping peer for error","err":"read tcp 10.42.0.155:35458->62.210.102.230:26656: use of closed network connection","level":"error","module":"p2p","peer":"Peer{MConn{62.210.102.230:26656} c74e0ce1824329c3fb51691ef63208dc1d195af1 out}","ts":"2021-06-16T09:23:30.910402061Z"}
{"_msg":"error while stopping peer","error":"already stopped","level":"error","module":"p2p","ts":"2021-06-16T09:23:30.910457022Z"}
{"_msg":"Stopping Consensus service","impl":"ConsensusReactor","level":"info","module":"consensus","ts":"2021-06-16T09:23:30.911299286Z"}
{"_msg":"Not stopping State service -- has not been started yet","impl":"ConsensusState","level":"error","module":"consensus","ts":"2021-06-16T09:23:30.911342316Z"}
{"_msg":"Error stopping consensus state","err":"not started","level":"error","module":"consensus","ts":"2021-06-16T09:23:30.911369967Z"}
{"_msg":"Error serving server","err":"accept tcp 127.0.0.1:26657: use of closed network connection","level":"error","module":"tendermint","ts":"2021-06-16T09:23:30.911407087Z"}
{"_msg":"Stopped accept routine, as transport is closed","level":"error","module":"p2p","numPeers":0,"ts":"2021-06-16T09:23:30.911399947Z"}
{"_msg":"Stopping gossipDataRoutine for peer","level":"info","module":"consensus","peer":"Peer{MConn{62.210.102.230:26656} c74e0ce1824329c3fb51691ef63208dc1d195af1 out}","ts":"2021-06-16T09:23:30.99150352Z"}
{"_msg":"Stopping gossipVotesRoutine for peer","level":"info","module":"consensus","peer":"Peer{MConn{62.210.102.230:26656} c74e0ce1824329c3fb51691ef63208dc1d195af1 out}","ts":"2021-06-16T09:23:30.99149103Z"}
2021/06/16 09:23:31 Node Stopped with error: <nil>

[wirwolf]

https://github.com/MinterTeam/minter-go-node/blob/v2.4.0/coreV2/minter/minter.go#L54
https://github.com/tendermint/tendermint/blob/master/libs/os/os.go#L24