Display the 20 last Resque failed jobs in console.

display_resque_failed_job.rb

start_at = Resque::Failure.count - 20
finish_at = Resque::Failure.count
Resque::Failure.all(start_at, finish_at).each do |job|
  puts "----------"
  puts "#{job["failed_at"]}"
  puts "#{job["payload"]}"
  puts "#{job["error"]}"
  job["backtrace"].each do |line|
    puts "#{line}"
  end
end