Deprication warning

[kaushiksundar]

I tried using the gem. It is failing while building.

      01 DEPRECATION WARNING: You are using the a deprecated processor interface Closure::Compiler.
      01 Please update your processor interface:
      01 https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors
      01  (called from js_compressor= at /datadrive/websites/staging/shared/bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/compressing.rb:71)
      01 DEPRECATION WARNING: You are using the a deprecated processor interface Closure::Compiler.
      01 Please update your processor interface:
      01 https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors
      01  (called from js_compressor= at /datadrive/websites/staging/shared/bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/compressing.rb:71)
      01 DEPRECATION WARNING: You are using the a deprecated processor interface Closure::Compiler.
      01 Please update your processor interface:
      01 https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors
      01  (called from js_compressor= at /datadrive/websites/I staging/shared/bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/compressing.rb:71)
      01 rake aborted!