I'm trying to clone and build the Kotlin project on my local machine, so I can create a patch to fix KT-10821, but I'm getting a build failure when trying to build the libraries. It fails on the "kotlin-maven-plugin" step:
[INFO] Building: simple/pom.xml
[INFO] run script verify.groovy
[INFO] ..FAILED (4.5 s)
[INFO] The post-build script returned false.