[CI] Only cache .cargo dir

diff --git a/.travis.yml b/.travis.yml
index f32a95d2d46fb8a818d6a83dc8f3548a08f29b91..17bcefde38b367be259243fa3cf1bdaa344c6bed 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,8 @@
 sudo: false
 language: rust
-cache: cargo
+cache:
+  directories:
+    - $HOME/.cargo
 
 os:
   - linux