MacOS brew install google-chrome fail

Environments macOS
1

Hello,

My TravisCI configuration file contains the following lines:

    language: node_js
    matrix:
      include:
        - os: osx
          node_js: '8'
          sudo: 'required'
    before_install:
      - brew update > /dev/null
      - brew cask install google-chrome
    install:
      - npm install
      - npm run build
    script:
      - npm test

Fail info as below:

    brew cask install google-chrome
    Updating Homebrew...
    ==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
      https://github.com/Homebrew/brew#donations
    ==> Auto-updated Homebrew!
    Updated 1 tap (homebrew/core).
    ==> Updated Formulae
    jena                libbtbb             stone-soup          up
    ==> Satisfying dependencies
    ==> Downloading https://dl.google.com/chrome/mac/stable/GGRO/googlechrome.dmg
    ######################################################################## 100.0%
    ==> Verifying SHA-256 checksum for Cask 'google-chrome'.
    ==> Note: Running `brew update` may fix SHA-256 checksum errors.
    Error: Checksum for Cask 'google-chrome' does not match.
    Expected: ba69f4900188a0b01ec9c870daf74e71a93a60040da077de5e6a407c28cb95fc
    Actual:   30f7da62c0dd116ac299b69704e93d577b66c713f90db85f976a0075ef38c6cf
    File:   
 /Users/travis/Library/Caches/Homebrew/downloads/9830ac8a5256756d2643fbdb6a47ba0eb019c3816fc4366049f2483999b2ee4f--googlechrome.dmg
To retry an incomplete download, remove the file above.
The command "brew cask install google-chrome" failed and exited with 1 during .

Fail job link:

https://travis-ci.org/BruceDai/webml-polyfill-1/jobs/463735621