Fabricator :err do problem! fingerprint 'some-finger-print' end Fabricator :notice do err! message 'FooError: Too Much Bar' backtrace! server_environment { {'environment-name' => 'production'} } request {{ 'component' => 'foo', 'action' => 'bar' }} notifier {{ 'name' => 'Notifier', 'version' => '1', 'url' => 'http://toad.com' }} end Fabricator :backtrace do fingerprint "fingerprint" lines(:count => 99) { Fabricate.build(:backtrace_line) } end Fabricator :backtrace_line do number { rand(999) } file { "/path/to/file/#{SecureRandom.hex(4)}.rb" } method(:method) { ActiveSupport.methods.shuffle.first } end