Run tests with RSpec formatter in Rake task

gistfile1.rb

require 'rspec/core/rake_task'
require 'ci/reporter/rake/rspec'
  
RSpec::Core::RakeTask.new(:spec) do |t|
  t.rspec_opts = ['--format html', '--out spec/reports/results.html']
  t.pattern = 'spec/heartbeat/heartbeat_spec.rb'
end

task :clean do
  rm_rf 'spec/reports'
  rm_rf 'failure_screenshots'
end

task :default => :spec
task :spec => [:clean, 'ci:setup:rspec']

output.txt

bash-3.2$ bundle exec rake
rm -rf spec/reports
rm -rf failure_screenshots
rm -rf spec/reports
/Users/alanbaird/.rbenv/versions/2.1.5/bin/ruby -I/Users/alanbaird/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.1.7/lib:/Users/alanbaird/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rspec-support-3.1.2/lib /Users/alanbaird/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.1.7/exe/rspec spec/heartbeat/heartbeat_spec.rb --format html --out spec/reports/results.html
F

Failures:

  1) Save For Later find deal, save deal, unsave deal
     Failure/Error: deal_page.unsave_deal
     Watir::Wait::TimeoutError:
       timed out after 30 seconds
     # ./lib/ls/mixins/save_for_later.rb:21:in `unsave_deal'
     # ./spec/heartbeat/heartbeat_spec.rb:17:in `block (2 levels) in <top (required)>'

Finished in 52.06 seconds (files took 0.3092 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/heartbeat/heartbeat_spec.rb:8 # Save For Later find deal, save deal, unsave deal
/Users/alanbaird/.rbenv/versions/2.1.5/bin/ruby -I/Users/alanbaird/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.1.7/lib:/Users/alanbaird/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rspec-support-3.1.2/lib /Users/alanbaird/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.1.7/exe/rspec spec/heartbeat/heartbeat_spec.rb --format html --out spec/reports/results.html failed
bash-3.2$