During call to ./gradlew assemble

:core:compileGroovy
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files declare unsafe vararg methods.
Note: Recompile with -Xlint:varargs for details.
>>> a serious error occurred: BUG! exception in phase 'class generation' in source unit '/Users/robert/wkdir/gradle/subprojects/core/src/main/groovy/org/gradle/api/internal/AutoCreateDomainObjectContainerDelegate.groovy' unsupported Target TYPE_PARAMETER
>>> stacktrace:
BUG! exception in phase 'class generation' in source unit '/Users/robert/wkdir/gradle/subprojects/core/src/main/groovy/org/gradle/api/internal/AutoCreateDomainObjectContainerDelegate.groovy' unsupported Target TYPE_PARAMETER
at org.codehaus.groovy.vmplugin.v5.Java5.getElementCode(Java5.java:301)
at org.codehaus.groovy.vmplugin.v5.Java5.configureAnnotationFromDefinition(Java5.java:197)
at org.codehaus.groovy.vmplugin.v5.Java5.configureAnnotation(Java5.java:207)
at org.codehaus.groovy.classgen.AnnotationVisitor.visit(AnnotationVisitor.java:81)
at org.codehaus.groovy.classgen.ExtendedVerifier.visitAnnotation(ExtendedVerifier.java:153)
at org.codehaus.groovy.classgen.ExtendedVerifier.visitAnnotations(ExtendedVerifier.java:114)
at org.codehaus.groovy.classgen.ExtendedVerifier.visitConstructorOrMethod(ExtendedVerifier.java:75)
at org.codehaus.groovy.classgen.ExtendedVerifier.visitMethod(ExtendedVerifier.java:71)
at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1039)
at org.codehaus.groovy.classgen.ExtendedVerifier.visitClass(ExtendedVerifier.java:59)
at org.codehaus.groovy.control.CompilationUnit$11.call(CompilationUnit.java:721)
at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:936)
at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:513)
at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:491)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:468)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:447)
at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:57)
at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:170)
at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:138)
at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:152)

FAILURE: Build failed with an exception.

• Where:
  Build file '/Users/robert/wkdir/gradle/subprojects/core/core.gradle'

• What went wrong:
  Execution failed for task ':core:compileGroovy'.
  Cause: Forked groovyc returned error code: 1

• Try:
  Run with -s or -d option to get more details. Run with -S option to get the full (very verbose) stacktrace.

BUILD FAILED