diff --git a/app/run-test.sh b/app/run-test.sh
index 6935f2c8..e0452800 100755
--- a/app/run-test.sh
+++ b/app/run-test.sh
@@ -26,9 +26,11 @@ fi
 testcase="$path"
 echo "Running $testcase:"
 
-west build -d build/$testcase -b native_posix_64 -- -DZMK_CONFIG="$(pwd)/$testcase" > /dev/null 2>&1
+mkdir -p build/$testcase
+west build -d build/$testcase -b native_posix_64 -- -DZMK_CONFIG="$(pwd)/$testcase" >build/$testcase/build.log 2>&1
 if [ $? -gt 0 ]; then
     echo "FAILED: $testcase did not build" | tee -a ./build/tests/pass-fail.log
+    echo $'\t' "see ./build/$testcase/build.log"
     exit 1
 fi