message: Trying to ping a specific nightly version
diff: @@ -10,7 +10,7 @@ jobs:
  keys:
  - v4-cargo-cache-{{ arch }}-{{ checksum "Cargo.lock" }}
  - run: sudo apt-get install -y cmake
  - - run: rustup default nightly
  + - run: rustup default nightly-2018-10-07
  - run: cargo test
  - save_cache:
  