`supplementary_groups` has no default.
`supplementary_groups` has no default.

Causes undefined method `map` for `nil`.
sferik/bluepill,iroller/bluepill,bluepill-rb/bluepill,fgbreel/bluepill,bluepill-rb/bluepill,fgbreel/bluepill,dealpath/bluepill,d-unseductable/bluepill,sferik/bluepill,dealpath/bluepill,iroller/bluepill,d-unseductable/bluepill