Rakefile in pbt-0.2.0 vs Rakefile in pbt-0.3.0

@@ -17,31 +17,40 @@
       puts "### Benchmark success:simple"
       puts
       puts "This runs a script that does not do any IO or CPU bound work."
       puts
       ENV["RUBYOPT"] = "-W:no-experimental"
+      ENV["RUBY_MN_THREADS"] = "1"
+      puts "```"
       sh "ruby", "benchmark/success_simple.rb"
+      puts "```"
       puts
     end
 
     task :cpu_bound do
       puts "### Benchmark success:cpu_bound"
       puts
       puts "This runs a script that does CPU bound work."
       puts
       ENV["RUBYOPT"] = "-W:no-experimental"
+      ENV["RUBY_MN_THREADS"] = "1"
+      puts "```"
       sh "ruby", "benchmark/success_cpu_bound.rb"
+      puts "```"
       puts
     end
 
     task :io_bound do
       puts "### Benchmark success:io_bound"
       puts
       puts "This runs a script that does IO bound work."
       puts
       ENV["RUBYOPT"] = "-W:no-experimental"
+      ENV["RUBY_MN_THREADS"] = "1"
+      puts "```"
       sh "ruby", "benchmark/success_io_bound.rb"
+      puts "```"
       puts
     end
   end
 
   namespace :failure do
@@ -49,10 +58,13 @@
       puts "### Benchmark failure:simple"
       puts
       puts "This runs a script that fails and shrink happens."
       puts
       ENV["RUBYOPT"] = "-W:no-experimental"
+      ENV["RUBY_MN_THREADS"] = "1"
+      puts "```"
       sh "ruby", "benchmark/failure_simple.rb"
+      puts "```"
       puts
     end
   end
 end