================ Step #1 =================

Cleaning output files:
  out/production/module/META-INF/module.kotlin_module
  out/production/module/test/A.class
End of files
Compiling files:
  src/A.kt
End of files
After build round. Marked as dirty by Kotlin:
  src/usage.kt
Exit code: ADDITIONAL_PASS_REQUIRED
------------------------------------------
Cleaning output files:
  out/production/module/META-INF/module.kotlin_module
  out/production/module/test/UsageKt.class
End of files
Compiling files:
  src/usage.kt
End of files
Exit code: ABORT
------------------------------------------
COMPILATION FAILED
Smart cast to 'Int' is impossible, because 'a.x' is a property that has open or custom getter