diff --git a/.travis.yml b/.travis.yml
index 8c91a74..b1126a2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,12 @@ rust:
   - stable
   - beta
   - nightly
-matrix:
-  allow_failures:
-    - rust: nightly
+
+env:
+  - ARCH=x86_64
+  - ARCH=i686
+
+addons:
+  apt:
+    packages:
+      - gcc-multilib