Cache mdbook

gnzlbg · gnzlbg · commit 0cb474896eb2 · 2019-05-25T12:33:35.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,10 @@
 language: rust
 sudo: false
 rust: nightly
-cache: cargo
+cache:
+  directories:
+    - $HOME/.cargo/.crates.toml
+    - $HOME/.cargo/bin/mdbook
 install: cargo install mdbook
 script: bash -c "cd reference && mdbook build && mdbook test"
 env:
