Выдается ошибка npm Warn при установке grunt?

C:\Users\User>npm install -g grunt-cli
npm WARN deprecated mixin-deep@1.3.1: Critical bug fixed in v2.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@2.0.0: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.4.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
C:\Users\User\AppData\Roaming\npm\grunt -> C:\Users\User\AppData\Roaming\npm\node_modules\grunt-cli\bin\grunt
+ grunt-cli@1.3.2
updated 1 package in 15.857s