Error outside of examples is not reflected in notification

[wnuqui]

Steps to recreate

1. Generate a gem skeleton via bundle. (A simple app with a Gemfile is also usable but you need to compose your own app structure.)
2. Setup guard-rspec and terminal notification. (As this is setup Mac OS, terminal-notifier and terminal-notifier-guard are used. Use corresponding gems for non Mac OS setups.)
3. Add passing examples.
4. Then, add an example that will not yet fail/pass due to an error. Say you have an Arithmeter module and you wish to add Util module under it. Example:

require "spec_helper"

describe Arithmeter::Util do
  it "is true" do
    expect(true).to eq(true)
  end
end

Note: You can just clone this repo and just do last step (No. 4).

Current Behavior

After following recreate steps above:

• There is a notification displayed but it is not for error.
• It just notifies that there are 0 examples, 0 failures in x seconds, and
• The icon implies that test is a success.

Expected Behavior

• It should notify that there is an error and examples are not run.
• It should not notify about number of examples and failures.
• The icon should be of error type.

System configuration

• ruby 2.3.3p222
• guard-rspec (4.7.3)
• guard (2.14.1)
• rspec (3.6.0)