killbill-memoizeit

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 62552a2..ca7b9fc 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -163,6 +163,7 @@ jobs:
             done
 
             set -e
+            mkdir -p /tmp/test-results
             bundle exec rake test:core | tee /tmp/test-results/test.txt 2>&1
       - store_test_results:
           path: /tmp/test-results