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.