Improve error message when trying to use an abstract class as a service implementation

[ERROR] Registry [ 2] Invoking constructor public org.apache.tapestry5.ioc.AbstractGreeter() (for service 'AbstractGreeter')
org.apache.tapestry5.ioc.internal.OperationException: Error invoking constructor public org.apache.tapestry5.ioc.AbstractGreeter(): java.lang.InstantiationException
	at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.logAndRethrow(OperationTrackerImpl.java:184)
	at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:90)
	at org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:72)
	at org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1258)
	at org.apache.tapestry5.ioc.internal.util.ConstructionPlan.createObject(ConstructionPlan.java:61)
	at org.apache.tapestry5.ioc.internal.ConstructorServiceCreator.createObject(ConstructorServiceCreator.java:62)
	at org.apache.tapestry5.ioc.internal.ReloadableServiceImplementationObjectCreator.createInstance(ReloadableServiceImplementationObjectCreator.java:54)
	at org.apache.tapestry5.ioc.internal.AbstractReloadableObjectCreator$1.invoke(AbstractReloadableObjectCreator.java:136)
	at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:82)
	at org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:72)
	at org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1258)
	at org.apache.tapestry5.ioc.internal.AbstractReloadableObjectCreator.createInstance(AbstractReloadableObjectCreator.java:129)
	at org.apache.tapestry5.ioc.internal.AbstractReloadableObjectCreator.createObject(AbstractReloadableObjectCreator.java:121)
	at $Greeter_1eb73c5d7c1.delegate(Unknown Source)
	at $Greeter_1eb73c5d7c1.getGreeting(Unknown Source)
	at $Greeter_1eb73c5d7bf.getGreeting(Unknown Source)
	at org.apache.tapestry5.ioc.Greeter$getGreeting.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
	at ioc.specs.ServiceBinderSpec.$spock_feature_1_1(ServiceBinderSpec.groovy:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
	at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:330)
	at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:311)
	at org.spockframework.runtime.BaseSpecRunner.invokeFeatureMethod(BaseSpecRunner.java:285)
	at org.spockframework.runtime.BaseSpecRunner.doRunIteration(BaseSpecRunner.java:256)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
	at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:330)
	at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:311)
	at org.spockframework.runtime.BaseSpecRunner.runIteration(BaseSpecRunner.java:223)
	at org.spockframework.runtime.BaseSpecRunner.initializeAndRunIteration(BaseSpecRunner.java:214)
	at org.spockframework.runtime.BaseSpecRunner.runSimpleFeature(BaseSpecRunner.java:205)
	at org.spockframework.runtime.BaseSpecRunner.doRunFeature(BaseSpecRunner.java:199)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
	at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:330)
	at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:311)
	at org.spockframework.runtime.BaseSpecRunner.runFeature(BaseSpecRunner.java:175)
	at org.spockframework.runtime.BaseSpecRunner.runFeatures(BaseSpecRunner.java:152)
	at org.spockframework.runtime.BaseSpecRunner.doRunSpec(BaseSpecRunner.java:112)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
	at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:330)
	at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:311)
	at org.spockframework.runtime.BaseSpecRunner.runSpec(BaseSpecRunner.java:91)
	at org.spockframework.runtime.BaseSpecRunner.run(BaseSpecRunner.java:82)
	at org.spockframework.runtime.Sputnik.run(Sputnik.java:63)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.RuntimeException: Error invoking constructor public org.apache.tapestry5.ioc.AbstractGreeter(): java.lang.InstantiationException
	at org.apache.tapestry5.ioc.internal.util.ConstructorInvoker.invoke(ConstructorInvoker.java:59)
	at org.apache.tapestry5.ioc.internal.util.LoggingInvokableWrapper.invoke(LoggingInvokableWrapper.java:43)
	at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:82)
	... 65 more
Caused by: java.lang.InstantiationException
	at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.apache.tapestry5.ioc.internal.util.ConstructorInvoker.invoke(ConstructorInvoker.java:50)
	... 67 more