DMKeychain failed to store data for key 'passcode', error: -34018

[inardo]

I've been getting this error recently.

DMPasscode[10602:1010246] DMKeychain failed to store data for key 'passcode', error: -34018

[D-32]

Maybe something in this thread can help you: https://forums.developer.apple.com/thread/4743?tstart=0