I am experiencing two problems with the current version of the sonar-scanner-gradle.
When triggering a scan process on a project that uses a newer JDK (9+), the scanner renders version names based upon the old versioning scheme (1.8, 1.9, 1.10…). However, versioning scheme change since Java 9 (9, 10, 11…). See: https://openjdk.java.net/jeps/223
Furthermore, the current gradle plugin does not support Java 11.
The root cause of the problem is the usage of Gradle 4.6. In a more recent version of gradle both problems have been adressed. So, please update the plugin.
Update: Moved to “Report a bug”