exe/benchmark-driver in benchmark_driver-0.5.0 vs exe/benchmark-driver in benchmark_driver-0.5.1

@@ -65,15 +65,17 @@
     $stderr.puts '  YAML format may be wrong. See error below:'
     $stderr.puts
     raise
   end
 
+  opts = options.dup
+
   # Proceed execs first for --bundler
-  if options.key?(:execs)
-    config.runner_options.executables = options.delete(:execs)
+  if opts.key?(:execs)
+    config.runner_options.executables = opts.delete(:execs)
   end
 
-  options.each do |key, value|
+  opts.each do |key, value|
     case key
     when :bundler
       config.runner_options.executables.each do |executable|
         Benchmark::Driver::BundleInstaller.bundle_install_for(executable)
         executable.command << '-rbundler/setup'