Kotlin compiler isn't happy about class and package name clash in a jar

Thanks for the report. This is a known problem that has been fixed in 1.0.7: https://youtrack.jetbrains.com/issue/KT-15464. Please try the Kotlin 1.0.7 EAP, more information here: https://discuss.kotlinlang.org/t/kotlin-1-0-7-eap/