error running machinery

[cclark64]

usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/plugins/groups/groups_inspector.rb:53:in block in parse_groups': undefined method split' for nil:NilClass (NoMethodError)
from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/plugins/groups/groups_inspector.rb:42:in map' from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/plugins/groups/groups_inspector.rb:42:in parse_groups'
from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/plugins/groups/groups_inspector.rb:30:in inspect' from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/lib/inspect_task.rb:87:in block in build_description'
from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/lib/inspect_task.rb:79:in each' from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/lib/inspect_task.rb:79:in build_description'
from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/lib/inspect_task.rb:21:in inspect_system' from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/lib/cli.rb:768:in block (2 levels) in class:Cli'
from /usr/local/rvm/gems/ruby-2.3.0/gems/gli-2.18.0/lib/gli/command_support.rb:131:in execute' from /usr/local/rvm/gems/ruby-2.3.0/gems/gli-2.18.0/lib/gli/app_support.rb:296:in block in call_command'
from /usr/local/rvm/gems/ruby-2.3.0/gems/gli-2.18.0/lib/gli/app_support.rb:309:in call_command' from /usr/local/rvm/gems/ruby-2.3.0/gems/gli-2.18.0/lib/gli/app_support.rb:83:in run'
from /usr/local/rvm/gems/ruby-2.3.0/gems/machinery-tool-1.23.1/bin/machinery:41:in <top (required)>' from /usr/local/rvm/gems/ruby-2.3.0/bin/machinery:23:in load'
from /usr/local/rvm/gems/ruby-2.3.0/bin/machinery:23:in <main>' from /usr/local/rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:24:in eval'
from /usr/local/rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:24:in `

'

[thardeck]

Thanks for your report. The issue sounds related to #2261.
Did you edit your /etc/group manually or can you check if your file got similar issues?

Does the issue also appear, if you do not inspect groups machinery inspect -e groups ?