Constantly seeing Patch was finished unexpectedly, probably it was broken when downloaded from server

I am getting the following error 3 out of every 5 times I run a build.  I often have to run a build 4-5 times to get it to actually succeed.  I cannot find any other posts complaining about this with TeamCity and the builds used to be pretty reliable.  To be clear - the builds do work eventually, but only after babysitting them for 30 minutes.   I checked the servers and the disk volumes are not full. 

I have tried setting the VCS Checkout mode to All combinations of 'Always checkout files on Server', 'Prefer to checkout files on agent (recommended)' 'Always check out on Agent' and no combination seems to work.  

I am nearing my wits end with this problem.  Any suggestions?

jetbrains.buildServer.agent.impl.patch.PatchDownloaderImpl$1: Patch was finished unexpectedly, probably it was broken when downloaded from server at jetbrains.buildServer.agent.impl.patch.PatchDownloaderImpl.throwError(PatchDownloaderImpl.java:119) at jetbrains.buildServer.agent.impl.patch.PatchDownloaderImpl.checkPatch(PatchDownloaderImpl.java:105) at jetbrains.buildServer.agent.impl.patch.PatchDownloaderImpl.copyPatchAndCheck(PatchDownloaderImpl.java:70) at jetbrains.buildServer.agent.impl.patch.UpdateSourcesPatcherBase.copyPatchToTempFile(UpdateSourcesPatcherBase.java:68) at jetbrains.buildServer.agent.impl.patch.UpdateSourcesFromServer.updateSources(UpdateSourcesFromServer.java:45) at jetbrains.buildServer.agent.impl.patch.AbstractSourcesUpdater.doSourceUpdate(AbstractSourcesUpdater.java:47) at jetbrains.buildServer.agent.impl.patch.CheckoutSourcesBuildStage$CheckoutAction.checkout(CheckoutSourcesBuildStage.java:114) at jetbrains.buildServer.agent.impl.patch.CheckoutSourcesBuildStage.doCheckout(CheckoutSourcesBuildStage.java:81) at jetbrains.buildServer.agent.impl.patch.CheckoutSourcesBuildStage.doRecoverableStage(CheckoutSourcesBuildStage.java:52) at jetbrains.buildServer.agent.impl.buildStages.startStages.RecoverableBuildStage.doLastAttempt(RecoverableBuildStage.java:112) at jetbrains.buildServer.agent.impl.buildStages.startStages.RecoverableBuildStage.doBuildStage(RecoverableBuildStage.java:70) at jetbrains.buildServer.agent.impl.buildStages.BuildStagesExecutor$1.callStage(BuildStagesExecutor.java:31) at jetbrains.buildServer.agent.impl.buildStages.BuildStagesExecutor$1.callStage(BuildStagesExecutor.java:24) at jetbrains.buildServer.agent.impl.buildStages.StagesExecutor.callRunStage(StagesExecutor.java:78) at jetbrains.buildServer.agent.impl.buildStages.StagesExecutor.doStages(StagesExecutor.java:37) at jetbrains.buildServer.agent.impl.buildStages.BuildStagesExecutor.doStages(BuildStagesExecutor.java:24) at jetbrains.buildServer.agent.impl.BuildRunActionImpl.doStages(BuildRunActionImpl.java:75) at jetbrains.buildServer.agent.impl.BuildRunActionImpl.runBuild(BuildRunActionImpl.java:55) at jetbrains.buildServer.agent.impl.BuildAgentImpl.doActualBuild(BuildAgentImpl.java:295) at jetbrains.buildServer.agent.impl.BuildAgentImpl.access$100(BuildAgentImpl.java:53) at jetbrains.buildServer.agent.impl.BuildAgentImpl$1.run(BuildAgentImpl.java:259) at java.lang.Thread.run(Thread.java:745) Caused by: java.io.EOFException at java.io.DataInputStream.readByte(DataInputStream.java:267) at jetbrains.buildServer.vcs.patches.LowLevelPatcher.readAction(LowLevelPatcher.java:45) at jetbrains.buildServer.vcs.patches.LowLevelPatcher.readPatchStream(LowLevelPatcher.java:114) at jetbrains.buildServer.vcs.patches.LowLevelPatcher.applyPatch(LowLevelPatcher.java:104) at jetbrains.buildServer.vcs.patches.AbstractPatcher.applyPatch(AbstractPatcher.java:42) at jetbrains.buildServer.agent.impl.patch.PatchApplierImpl.applyPatch(PatchApplierImpl.java:18) at jetbrains.buildServer.agent.impl.patch.PatchDownloaderImpl.checkPatchInFileIsCompleted(PatchDownloaderImpl.java:89) at jetbrains.buildServer.agent.impl.patch.PatchDownloaderImpl.checkPatch(PatchDownloaderImpl.java:99)