Hi Russel, I bumped gradle to 4.8 just now. Master/HEAD build is OK with Oracle JDK 10. Please try again. Cheers, Daniel.Sun ----- Daniel Sun Apache Groovy committer Blog: http://blog.sunlan.me Twitter: @daniel_sun -- Sent from: http://groovy.329449.n5.nabble.com/Groovy-Dev-f372993.html