test using cache

Author: bors

README.md

@@ -76,4 +76,4 @@ Third-party logos may be subject to third-party copyrights and trademarks. See
 [trademark-policy]: https://rustfoundation.org/policy/rust-trademark-policy/
 [policies-licenses]: https://www.rust-lang.org/policies/licenses
 
-Test try build
+Test try build.