diff --git tools/bump-buildfarm-to-latest.sh tools/bump-buildfarm-to-latest.sh
index 591347e..1e68cdf 100755
--- tools/bump-buildfarm-to-latest.sh
+++ tools/bump-buildfarm-to-latest.sh
@@ -122,7 +122,7 @@ EOM

 after_rebase() {
     # Verify that upstream's test suite passes
-    bazelisk test -- //src/test/java/build/buildfarm:all
+    bazelisk test --test_output=errors -- //src/test/java/build/buildfarm:all

     # Push rebased changes back to Spotify's fork of upstream
     git push -u origin HEAD
