Clover for Ant raises "Error finalising instrumentation"

[Josh McDade]

The project will build and test fine without clover via ant clean build unittests. However, when try to integrate clover via ant -lib ejb-3.7.1.jar with.clover build unittests clover.report it ends up returning "Error finalising instrumentation" and the following stack trace:

clover Error finalising instrumentation:
clover java.io.IOException: Failed to move tmp registry file /myproject/.clover/clover3_1_6.db.tmp to final registry filejava.io.IOException: Failed to move tmp registry file /myproject/.clover/clover3_1_6.db.tmp to final registry file
clover at com.atlassian.clover.registry.format.FreshRegFile.saveImpl(FreshRegFile.java:117)
clover at com.atlassian.clover.registry.format.FreshRegFile.saveImpl(FreshRegFile.java:18)
clover at com.atlassian.clover.registry.format.RegFile.save(RegFile.java:38)
clover at com.cenqua.clover.registry.Clover2Registry.saveAndOverwriteFile(Clover2Registry.java:268)
clover at com.cenqua.clover.registry.Clover2Registry.saveAndOverwriteFile(Clover2Registry.java:244)
clover at com.atlassian.clover.instr.java.Instrumenter.endInstrumentation(Instrumenter.java:289)
clover at com.atlassian.clover.instr.java.Instrumenter.endInstrumentation(Instrumenter.java:280)
clover at org.apache.tools.ant.taskdefs.CloverCompilerAdapter.setJavac(CloverCompilerAdapter.java:226)
clover at com.mycompany.ant.taskdefs.YJavaC.compile(Unknown Source)
clover at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:930)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:398)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at net.sf.antcontrib.logic.IfTask.execute(IfTask.java:197)
clover at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.TaskAdapter.execute(TaskAdapter.java:154)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at net.sf.antcontrib.logic.IfTask.execute(IfTask.java:197)
clover at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.TaskAdapter.execute(TaskAdapter.java:154)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:398)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:398)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at sun.reflect.GeneratedMethodAccessor41.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at net.sf.antcontrib.logic.OutOfDate.execute(OutOfDate.java:457)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:398)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
clover at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
clover at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:398)
clover at sun.reflect.GeneratedMethodAccessor69.invoke(Unknown Source)
clover at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
clover at java.lang.reflect.Method.invoke(Method.java:616)
clover at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
clover at org.apache.tools.ant.Task.perform(Task.java:348)
clover at org.apache.tools.ant.taskdefs.Parallel$TaskRunnable.run(Parallel.java:435)
clover at org.apache.tools.ant.taskdefs.Parallel$TaskRunnable.run(Parallel.java:435)
clover at java.lang.Thread.run(Thread.java:679)
clover java.io.IOException: Failed to move tmp registry file /myproject/.clover/clover3_1_6.db.tmp to final registry file
clover ** Error(s) occurred and the instrumentation process can't continue.

It seems clover is doing its thing during the build because I see lines like this frequently in the log:

javac Compiling 205 source files to /myproject/classes
clover Updating existing database at '/myproject/.clover/clover3_1_6.db'.
clover Clover all over. Instrumented 2 files (1 package).
clover Elapsed time = 0.005 secs. (400 files/sec, 12,800 srclines/sec)
clover Processing files at 1.6 source level.

[Marek Parfianowicz · Accepted solution]

The exception:

[clover] Error finalising instrumentation:
[clover] java.io.IOException: Failed to move tmp registry file 
/myproject/.clover/clover3_1_6.db.tmp to final registry file

means that Clover was unable to rename file from '/myproject/.clover/clover3_1_6.db.tmp' to '/myproject/.clover/clover3_1_6.db'. This kind of error is usually thrown when a parallel build is configured (by a <parallel> task, for instance).

Clover currently does not support parallel compilation, so you have to disable it in your build.

Regards
Marek