Strange behavior when locking in for loops about redislock

[Shandur]

@farzinnasiri Hey!
The 2nd block of code is a bit unclear. Most likely, you've already solved the problem.
But I might assume that the problem is in key variable - the value of key is persisted from iteration to iteration till the end of the loop.
What I mean is that most likely the loop should've looked like that:

for _, key := range keys
    key = key
    go processDeviceLogs(key)
}

Cheers!