Don't cache travis CI.
Reverts
The CI is hanging at setting up the cache. A proper solution would
be nice, but in the meantime, we'll just disable caching.
@@ -28,7 +28,6 @@ matrix:
cargo build --verbose --features "$FEATURES" &&
cargo test --verbose --features "$FEATURES" &&
cargo bench --no-run --verbose --features "$FEATURES"
-cache: cargo # https://docs.travis-ci.com/user/languages/rust/#dependency-management
branches:
only:
- master
