Avoid superfluous repeated builds on Travis

jdub · jdub · commit 2895ae351c37 · 2016-11-16T06:24:03.000+11:00
diff --git a/.travis.yml b/.travis.yml
@@ -15,8 +15,8 @@ rust:
   - nightly
 
 env:
-  - LLVM_VERSION=3.8 BINDGEN_FEATURES=llvm_stable
-  - LLVM_VERSION=3.9 BINDGEN_FEATURES=
+  - CARGO_TARGET_DIR=/tmp/bindgen LLVM_VERSION=3.8 BINDGEN_FEATURES=llvm_stable
+  - CARGO_TARGET_DIR=/tmp/bindgen LLVM_VERSION=3.9 BINDGEN_FEATURES=
 
 cache:
   directories:
