Travis: Make a failure an actual failure

Croydon · Croydon · commit 1f44e1371ead · 2018-10-02T01:33:04.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -74,6 +74,7 @@ before_install:
     fi
 
 install:
+  - set -e;
   - travis_retry npm install;
 
 # This is a random private key used purely for testing.
