Ответ:

buildscript { ext.kotlin_version = '1.2.71' repositories { mavenCentral() } dependencies { classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } apply plugin: 'kotlin' kotlin { experimental { coroutines 'enable' } } repositories { mavenCentral() } dependencies { compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version" compile "org.jetbrains.kotlinx:kotlinx-coroutines-core:0.21" }