diff --git a/build_test.bash b/build_test.bash
index 3230f2d0a..296a79cd0 100755
--- a/build_test.bash
+++ b/build_test.bash
@@ -48,6 +48,10 @@ case $(uname) in
     ;;
 esac
 
+echo
+echo "Free disk space:"
+df -h
+
 echo
 echo "Running Bazel smoke test..."
 "${TOP}/tools/bazel" --batch --max_idle_secs=1 info