message: rm fallback cache in circle CI
diff: @@ -60,7 +60,6 @@ jobs:
  - restore_cache:
  keys:
  - v8-test-cargo-cache-linux-stable-{{ arch }}-{{ checksum "Cargo.lock" }}
  - - v8-test-cargo-cache-linux-stable-{{ arch }}
  - <<: *run_install_dependencies
  - run:
  name: Tests
  @@ -158,7 +157,6 @@ jobs:
  - restore_cache:
  keys:
  - v8-cargo-cache-linux-nightly-{{ arch }}-{{ checksum "Cargo.lock" }}
  - - v8-cargo-cache-linux-nightly-{{ arch }}
  - run:
  name: Install dependencies
  command: |
  @@ -226,7 +224,6 @@ jobs:
  - restore_cache:
  keys:
  - v8-cargo-cache-darwin-nightly-{{ arch }}-{{ checksum "Cargo.lock" }}
  - - v8-cargo-cache-darwin-nightly-{{ arch }}
  - run:
  name: Install crate dependencies
  command: |
  @@ -309,7 +306,6 @@ jobs:
  - restore_cache:
  keys:
  - v8-cargo-cache-linux-nightly-{{ arch }}-{{ checksum "Cargo.lock" }}
  - - v8-cargo-cache-linux-nightly-{{ arch }}
  - run:
  name: Install dependencies
  command: |
  