Wb-rules упал

Добрый день!
Во время удаления скриптов wb-rules упал. Вот лог:

Лог
Aug 05 13:24:11 IQ320000 wb-rules[3962]: INFO: LiveRemoveFile: /etc/wb-rules/62b57f0baaeeddb83b48d2b3-__1456343689__.js
Aug 05 13:24:11 IQ320000 wb-rules[3962]: INFO: LiveRemoveFile: /etc/wb-rules/62b9bde5b593102b816c9bce-__3175239624__.js
Aug 05 13:24:11 IQ320000 wb-rules[3962]: INFO: LiveRemoveFile: /etc/wb-rules/62b9bde52596e33945363cfe-__2012289009__.js
Aug 05 13:24:11 IQ320000 wb-rules[3962]: INFO: [engine] Stop main loop
Aug 05 13:24:11 IQ320000 wb-rules[3962]: panic: send on closed channel
Aug 05 13:24:11 IQ320000 wb-rules[3962]: goroutine 53 [running]:
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wb-rules/wbrules.(*RuleEngine).CallSync(0x1560100, 0x15f8ca0)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wb-rules/wbrules/engine.go:893 +0xf4
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wbgong.(*DeferredList).MaybeDefer(0x1876260, 0x15f8ca0)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wbgong@v0.3.0/util.go:61 +0x11c
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wb-rules/wbrules.(*RuleEngine).WhenEngineReady(...)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wb-rules/wbrules/engine.go:910
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wb-rules/wbrules.(*ESEngine).LiveRemoveFile(0x1476640, 0x18590c0, 0x38, 0x38, 0x19b0a00)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wb-rules/wbrules/esengine.go:917 +0x154
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wbgo-private.(*dirWatcher).removePath(0x14768c0, 0x18590c0, 0x38)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wbgo-private/dirwatcher.go:227 +0x290
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wbgo-private.(*dirWatcher).processOp(0x14768c0, 0x15f3310)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wbgo-private/dirwatcher.go:117 +0x110
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wbgo-private.(*dirWatcher).processEvents(0x14768c0)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wbgo-private/dirwatcher.go:128 +0x9c
Aug 05 13:24:11 IQ320000 wb-rules[3962]: github.com/wirenboard/wbgo-private.(*dirWatcher).startWatching.func1(0x14768c0)
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wbgo-private/dirwatcher.go:158 +0x1b4
Aug 05 13:24:11 IQ320000 wb-rules[3962]: created by github.com/wirenboard/wbgo-private.(*dirWatcher).startWatching
Aug 05 13:24:11 IQ320000 wb-rules[3962]:         github.com/wirenboard/wbgo-private/dirwatcher.go:148 +0x1bc
Aug 05 13:24:11 IQ320000 systemd[1]: wb-rules.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Aug 05 13:24:11 IQ320000 systemd[1]: Stopped MQTT Rule engine for Wiren Board.
Aug 05 13:24:11 IQ320000 systemd[1]: wb-rules.service: Unit entered failed state.
Aug 05 13:24:11 IQ320000 systemd[1]: wb-rules.service: Failed with result 'exit-code'.
Aug 05 13:25:06 IQ320000 systemd[1]: Started MQTT Rule engine for Wiren Board.
Aug 05 13:25:07 IQ320000 wb-rules[5333]: INFO: driver is created
Aug 05 13:25:07 IQ320000 wb-rules[5333]: INFO: [wbgo_mqtt] rules-IQ320000-5333: MQTT connection established
Aug 05 13:25:07 IQ320000 wb-rules[5333]: INFO: driver loop is started
Aug 05 13:25:08 IQ320000 wb-rules[5333]: INFO: wait for driver to become ready
Aug 05 13:25:17 IQ320000 wb-rules[5333]: INFO: driver is ready

Версия wb-rules 2.11.1

Добрый день.
А падет именно при таих услвиях, при удалении трех файлов с правилами? А что в них за правила, как воспроизвести?

Обычно не падает, но в этот раз упало.
Файлов там больше, в районе 10-15ти, просто скинул вырезку. JS файлы генерируем, поэтому они могут за раз замениться на другие.

В файлах правила cron, whenChanged. Есть виртуальные устройства.

Попробую воспроизвести, конечно. Предполагаю что как раз дело в остановке работающих правил (или таймеров).