kotlin version that is used for building with gradle (1.1.2-5) differs from the one bundled into the IDE plugin (1.1.2-4)

I followed Miha_x64’s advice and upgraded the plugin which solved my problem:

Tools -> Kotlin -> Configure Kotlin Plugin Updates -> Check for updates now

My version of Android Studio is:

Android Studio 3.0.1
Build #AI-171.4443003, built on November 9, 2017