[hibernate-dev] Cannot build branch 5.1

Hi guys, I'm trying to build the 5.1 branch with "./gradlew publishToMavenLocal" but I get the following error: :hibernate-ehcache:generatePomFileForMavenJavaPublication :hibernate-ehcache:compileJava Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. Starting AnimalSniffer checks using [java16-1.0.signature] against [sourceSets.main] /home/petar/workspace/hibernate-orm/hibernate-ehcache/src/main/java/org/hibernate/cache/ehcache/internal/util/HibernateEhcacheUtils.java:104: Undefined reference: net.sf.ehcache.config.TerracottaConfiguration.ValueMode[] net.sf.ehcache.config.TerracottaConfiguration.ValueMode.values() /home/petar/workspace/hibernate-orm/hibernate-ehcache/src/main/java/org/hibernate/cache/ehcache/internal/util/HibernateEhcacheUtils.java:104: Undefined reference: net.sf.ehcache.config.TerracottaConfiguration.ValueMode net.sf.ehcache.config.TerracottaConfiguration.ValueMode.IDENTITY /home/petar/workspace/hibernate-orm/hibernate-ehcache/src/main/java/org/hibernate/cache/ehcache/internal/util/HibernateEhcacheUtils.java:104: Undefined reference: int net.sf.ehcache.config.TerracottaConfiguration.ValueMode.ordinal() /home/petar/workspace/hibernate-orm/hibernate-ehcache/src/main/java/org/hibernate/cache/ehcache/internal/util/HibernateEhcacheUtils.java:104: Undefined reference: net.sf.ehcache.config.TerracottaConfiguration.ValueMode net.sf.ehcache.config.TerracottaConfiguration.ValueMode.SERIALIZATION /home/petar/workspace/hibernate-orm/hibernate-ehcache/src/main/java/org/hibernate/cache/ehcache/internal/util/HibernateEhcacheUtils.java:104: Undefined reference: int net.sf.ehcache.config.TerracottaConfiguration.ValueMode.ordinal() :hibernate-ehcache:compileJava FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':hibernate-ehcache:compileJava'. Verify errors and ignore them with the proper annotation if needed. * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. BUILD FAILED Total time: 23.979 secs Can you please help me? -- Regards, Petar! Karlovo, Bulgaria. --- Public PGP Key at: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x19658550C3110611 Key Fingerprint: A369 A7EE 61BC 93A3 CDFF 55A5 1965 8550 C311 0611