diff --git a/extra/cargo/build b/extra/cargo/build
index 4c7a2a5f..2ac68b1e 100755
--- a/extra/cargo/build
+++ b/extra/cargo/build
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/sh -e
 
 mkdir -p target/snapshot
 cp cargo-bootstrap/cargo/bin/cargo cargo