Guard with RSpec on Rails 4 giving a lot of warnings

I'm wondering how I can turn off all these warnings when running a simple test:

[1] guard(main)> 
16:59:46 - INFO - Run all
16:59:46 - INFO - Running all specs
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/rspec-rails-3.0.1/lib/rspec/rails/adapters.rb:124: warning: instance variable @example not initialized
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/rspec-rails-3.0.1/lib/rspec/rails/adapters.rb:124: warning: instance variable @example not initialized
.*

Pending:
  HomeHelper add some examples to (or delete) /Users/esjd/ruby/rails/ts3/spec/helpers/home_helper_spec.rb
    # Not yet implemented
    # ./spec/helpers/home_helper_spec.rb:14

Finished in 0.03601 seconds (files took 7 minutes 48 seconds to load)
2 examples, 0 failures, 1 pending
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:76: warning: global variable `$CELLULOID_DEBUG' not initialized
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:76: warning: global variable `$CELLULOID_DEBUG' not initialized

/Users/esjd/.rvm/gems/ruby-2.1.2/gems/guard-2.6.1/lib/guard/interactor.rb:64: warning: instance variable @enabled not initialized
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/guard-2.6.1/lib/guard/interactor.rb:64: warning: instance variable @enabled not initialized
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/guard-2.6.1/lib/guard/interactor.rb:64: warning: instance variable @enabled not initialized
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/guard-2.6.1/lib/guard/interactor.rb:64: warning: instance variable @enabled not initialized
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:76: warning: global variable `$CELLULOID_DEBUG' not initialized
/Users/esjd/.rvm/gems/ruby-2.1.2/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:76: warning: global variable `$CELLULOID_DEBUG' not initialized

I'm running Rails 4.1.1, Ruby 2.1.2p95, and...

guard (2.6.1)
rspec (3.0.0)
guard-rspec (4.2.9)

I've tried running guard with:

guard :rspec, cmd:"ruby -W0 bin/rspec" do

instead of:

guard :rspec, cmd:"spring rspec" do

But it didn't do anything.

These warnings are super annoying, and I'm pretty sure I'm not causing them. Help!

The rspec generator rails generate rspec:install now puts the --warnings option in the .rspec file by default. Remove that line, and the warnings will go away.

You can set the warnings to false in the your test environment to force Rspec to disable the warnings messages.

# spec/spec_helper.rb

config.warnings = false