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

Compiling files:
  src/A.kt
  src/B.kt
  src/companionExtension.kt
  src/companionReferenceExplicit.kt
  src/companionReferenceImplicit.kt
  src/importedMember.kt
End of files
Exit code: ABORT
------------------------------------------
COMPILATION FAILED
Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type String?
Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type String?
Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type String?
Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type String?

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

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