./gradlew verifyVersions

> Configure project :benchmarks
=======================================
Elasticsearch Build Hamster says Hello!
  Gradle Version        : 5.1.1
  OS Info               : Linux 4.20.6-arch1-1-ARCH (amd64)
  JDK Version           : 11 (Oracle Corporation 11 [OpenJDK 64-Bit Server VM 11+28])
  JAVA_HOME             : /home/alpar/opt/jdk-11-28
  Random Testing Seed   : C94C5C47E0353AB5
=======================================

> Task :verifyVersions FAILED

FAILURE: Build failed with an exception.

* Where:
Build file '/home/alpar/work/elastic/elasticsearch/build.gradle' line: 147

* What went wrong:
Execution failed for task ':verifyVersions'.
> out-of-date released versions
  Following versions are not really released, but the build thinks they are: [6.7.0, 6.6.1]