dev: constrain rcov to ruby 1.8 builds

Rakefile

@@ -5,36 +5,39 @@ Bundler::GemHelper.install_tasks
 require 'rake'
 require 'rspec/core/rake_task'
 require 'rspec/mocks/version'
+require 'cucumber/rake/task'
 
 desc "Run all examples"
 RSpec::Core::RakeTask.new(:spec) do |t|
   t.rspec_opts = %w[--color]
 end
 
-require 'cucumber/rake/task'
 Cucumber::Rake::Task.new(:cucumber)
 
-namespace :rcov do
-  desc "Run all examples using rcov"
-  RSpec::Core::RakeTask.new(:spec) do |t|
-    t.rcov = true
-    t.rcov_opts =  %[-Ilib -Ispec --exclude "gems/*,features"]
-    t.rcov_opts << %[--text-report --sort coverage --no-html --aggregate coverage.data]
-  end
-
-  desc "Run cucumber features using rcov"
-  Cucumber::Rake::Task.new(:cucumber) do |t|
-    t.cucumber_opts = %w{--format progress}
-    t.rcov = true
-    t.rcov_opts =  %[-Ilib -Ispec --exclude "gems/*,features"]
-    t.rcov_opts << %[--text-report --sort coverage --aggregate coverage.data]
-  end
-
-  task :cleanup do
-    rm_rf 'coverage.data'
+if RUBY_VERSION.to_f == 1.8
+  namespace :rcov do
+    desc "Run all examples using rcov"
+    RSpec::Core::RakeTask.new(:spec) do |t|
+      t.rcov = true
+      t.rcov_opts =  %[-Ilib -Ispec --exclude "gems/*,features"]
+      t.rcov_opts << %[--text-report --sort coverage --no-html --aggregate coverage.data]
+    end
+
+    desc "Run cucumber features using rcov"
+    Cucumber::Rake::Task.new(:cucumber) do |t|
+      t.cucumber_opts = %w{--format progress}
+      t.rcov = true
+      t.rcov_opts =  %[-Ilib -Ispec --exclude "gems/*,features"]
+      t.rcov_opts << %[--text-report --sort coverage --aggregate coverage.data]
+    end
+
+    task :cleanup do
+      rm_rf 'coverage.data'
+    end
   end
 end
 
+
 desc "run specs and cukes with rcov"
 task :rcov => ["rcov:cleanup", "rcov:spec", "rcov:cucumber"]