diff --git a/library/compiler-builtins/ci/run.sh b/library/compiler-builtins/ci/run.sh
index 90441bdc9345..3846049ea134 100755
--- a/library/compiler-builtins/ci/run.sh
+++ b/library/compiler-builtins/ci/run.sh
@@ -1,6 +1,4 @@
-set -ex
-
-export RUST_BACKTRACE=1
+set -e
 
 # Test our implementation
 case $1 in