Why kotlin gradle plugin cannot build with 1.8 target?

Question

I have the simplest gradle project configured using intellij for kotlin 1.2.10. Here is my build.gradle file:

buildscript {
    ext.kotlin_version = \'1.2.10         


        

Answer 1

Please check if you have the following three stuff set in idea:

1. kotlin options in build.gradle

    kotlinOptions {
        jvmTarget = '1.8'
    }

2. Check the relevant Idea preferences

3. Check the project Facets