Warning during build for non-existent location

[javatarz]

Steps to reproduce

1. ./gradlew clean
2. ./gradlew test

Issue Description

When running the above commands, the output shows warnings

> Task :kluent-common:compileTestKotlinCommon
w: Classpath entry points to a non-existent location: ~/projects/personal/Kluent/common/build/classes/java/main
w: Classpath entry points to a non-existent location: ~/projects/personal/Kluent/common/build/resources/main