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

After chunkBuildStarted. Marked as dirty by Kotlin:
  src/A.kt
  src/companionExtension.kt
  src/companionReferenceExplicit.kt
  src/companionReferenceImplicit.kt
Cleaning output files:
  out/production/module/A$Companion.class
  out/production/module/A.class
  out/production/module/CompanionExtensionKt.class
  out/production/module/CompanionReferenceExplicitKt.class
  out/production/module/CompanionReferenceImplicitKt.class
  out/production/module/META-INF/module.kotlin_module
End of files
Compiling files:
  src/A.kt
  src/companionExtension.kt
  src/companionReferenceExplicit.kt
  src/companionReferenceImplicit.kt
End of files
Exit code: ABORT
------------------------------------------
COMPILATION FAILED
Unresolved reference 'Companion'.
Unresolved reference 'x'.
Unresolved reference 'Companion'.

================ Step #2 =================

Compiling files:
  src/A.kt
  src/companionExtension.kt
  src/companionReferenceExplicit.kt
  src/companionReferenceImplicit.kt
End of files
Exit code: OK
------------------------------------------