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    Type:Bug 
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    Resolution: Done
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    Priority:Major - P3 
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    Affects Version/s: 4.0.16
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    Component/s: None
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        ALL
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my standalone mongo server crashed because of power off.
and I tried to repair it with `mongod --repair` but failed.
the mongod repair log show that failed: WT_ERROR: non-specific WiredTiger error
The attachments contains some logs, i am a newbie of mongo, and much more detail can be found there.
mongo.log is the log after power off.
mongo-repair.log is the log after repair.