Bug#862845: /usr/bin/dracut: line 1624: warning: command substitution: ignored null byte in input

[Thomas Lange]

This problem is described in https://github.com/dracutdevs/dracut/issues/118
and is fixed upstream in commit f0bfada399c2c3269de353be5af37224349839a0
IIRC this can be ignored without causing any problems.

-- 
regards Thomas