diff --git a/build-server-crystal.cr b/build-server-crystal.cr
index 1a6f986..120ac3b 100644
--- a/build-server-crystal.cr
+++ b/build-server-crystal.cr
@@ -3,17 +3,18 @@ require "kemal"
 strategies_dir = ENV.fetch("STRATEGIES_DIR")
 
 post "/:strategy" do |env|
-  stdout = IO::Memory.new
+  output = IO::Memory.new 
   Process.run(
     "#{strategies_dir}/#{env.params.url["strategy"]}",
     [
       env.params.query.to_h.to_json,
       env.params.json.to_json
     ],
-    output: stdout,
+    output: output,
+    error: output,
   )
-  puts stdout.to_s
-  stdout.to_s
+  puts output.to_s
+  output.to_s
 end
 
 Kemal.run
diff --git a/test/strategy b/test/strategy
index afe606b..809115b 100755
--- a/test/strategy
+++ b/test/strategy
@@ -1,3 +1,6 @@
 #!/usr/bin/env sh
 
 echo "hello world!"
+echo "ohno" &1>2
+echo "hello world 2!"
+echo "ohno 2" &1>2