A modern programming language that makes developers happier.

kotlinlang

Same under Windows:
```
───── kobalt-plugin-api:compile
warning: [options] bootstrap class path not set in conjunction with -source 1.7
1 warning
  Kotlin 1.1.2 compiling 168 files
  Kotlin incremental compilation is enabled
*****
***** ERROR Error: com.beust.kobalt.KobaltException: Couldn't compile file: Source file or directory not found: C:\Users\erik\AppData\Local\Temp\modules\kobalt-plugin-api\src\main\kotlin\com\beust\kobalt\api\annotation\Annotations.kt
*****
```