RuboCop Spinel 
Custom cop for Spinel, warns on Ruby code that is not (yet) supported by Spinel.
Installation
# add to Gemfile
gem "rubocop_spinel"
# add to rubocop.yml
plugins:
- rubocop_spinel
Example Errors
class Example
class << self
def bad
42
end
end
end
Thread.new { puts Example.bad }
sample.rb:2:3: C: Spinel/Unsupported: Spinel does not support singleton classes.
class << self ...
^^^^^^^^^^^^^
sample.rb:9:1: C: Spinel/Unsupported: Spinel does not support threads or mutexes.
Thread.new { puts Example.bad }
^^^^^^
Changelog
0.0.1 (unreleased)