Exception thrown in metadata rebuild stops snapshot removal task completely.

I can't tell what the exact cause of this was, but this exception caused the maven metadata rebuild at the end of a snapshot removal task to stop entirely.  

The task should not stop because it wasn't able to rebuild one maven-metadata.xml file.

The task should properly log the file(s) involved in the failure if an exception occurs so we can find out the cause.

2019-04-20 09:02:22,325-0400 ERROR [quartz-2-thread-11] *SYSTEM org.sonatype.nexus.repository.maven.tasks.RemoveSnapshotsTask - Failed to run task 'Remove Maven snapshots from maven-snapshots' on repository 'maven-snapshots'
java.lang.RuntimeException: java.io.EOFException: input contained no data
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataUpdater.update(MetadataUpdater.java:111)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataUpdater.processMetadata(MetadataUpdater.java:72)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataRebuilder$Worker.lambda$2(MetadataRebuilder.java:461)
at org.sonatype.nexus.transaction.OperationPoint.proceed(OperationPoint.java:64)
at org.sonatype.nexus.transaction.TransactionalWrapper.proceedWithTransaction(TransactionalWrapper.java:56)
at org.sonatype.nexus.transaction.Operations.transactional(Operations.java:200)
at org.sonatype.nexus.transaction.Operations.call(Operations.java:146)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataRebuilder$Worker.rebuildMetadataInner(MetadataRebuilder.java:415)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataRebuilder$Worker.rebuildMetadata(MetadataRebuilder.java:382)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataRebuilder.rebuild(MetadataRebuilder.java:120)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataRebuilder.deleteAndRebuild(MetadataRebuilder.java:240)
at org.sonatype.nexus.repository.maven.internal.hosted.MavenHostedFacetImpl.deleteMetadata(MavenHostedFacetImpl.java:129)
at org.sonatype.nexus.repository.maven.internal.RemoveSnapshotsFacetImpl.removeSnapshots(RemoveSnapshotsFacetImpl.java:141)
at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
at org.sonatype.nexus.common.stateguard.StateGuard$GuardImpl.run(StateGuard.java:272)
at org.sonatype.nexus.common.stateguard.GuardedInterceptor.invoke(GuardedInterceptor.java:53)
at org.sonatype.nexus.repository.maven.tasks.RemoveSnapshotsTask.execute(RemoveSnapshotsTask.java:72)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at org.sonatype.nexus.repository.maven.tasks.RemoveSnapshotsTask.execute(RemoveSnapshotsTask.java:61)
at org.sonatype.nexus.repository.RepositoryTaskSupport.execute(RepositoryTaskSupport.java:73)
at org.sonatype.nexus.scheduling.TaskSupport.call(TaskSupport.java:93)
at org.sonatype.nexus.quartz.internal.task.QuartzTaskJob.doExecute(QuartzTaskJob.java:145)
at org.sonatype.nexus.quartz.internal.task.QuartzTaskJob.execute(QuartzTaskJob.java:108)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at org.sonatype.nexus.thread.internal.MDCAwareRunnable.run(MDCAwareRunnable.java:40)
at org.apache.shiro.subject.support.SubjectRunnable.doRun(SubjectRunnable.java:120)
at org.apache.shiro.subject.support.SubjectRunnable.run(SubjectRunnable.java:108)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.EOFException: input contained no data
at org.codehaus.plexus.util.xml.pull.MXParser.fillBuf(MXParser.java:3037)
at org.codehaus.plexus.util.xml.pull.MXParser.more(MXParser.java:3080)
at org.codehaus.plexus.util.xml.pull.MXParser.parseProlog(MXParser.java:1451)
at org.codehaus.plexus.util.xml.pull.MXParser.nextImpl(MXParser.java:1436)
at org.codehaus.plexus.util.xml.pull.MXParser.next(MXParser.java:1131)
at org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.read(MetadataXpp3Reader.java:913)
at org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.read(MetadataXpp3Reader.java:519)
at org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader.read(MetadataXpp3Reader.java:548)
at org.sonatype.nexus.repository.maven.internal.MavenModels.readMetadata(MavenModels.java:83)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataUtils.read(MetadataUtils.java:84)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataUpdater.lambda$0(MetadataUpdater.java:93)
at org.sonatype.nexus.transaction.OperationPoint.proceed(OperationPoint.java:64)
at org.sonatype.nexus.transaction.Operations.transactional(Operations.java:196)
at org.sonatype.nexus.transaction.Operations.call(Operations.java:146)
at org.sonatype.nexus.repository.maven.internal.hosted.metadata.MetadataUpdater.update(MetadataUpdater.java:89)
... 39 common frames omitted