builder/vmware: more resilient to racing deletes [GH-675]

CHANGELOG.md

@@ -18,6 +18,8 @@ BUG FIXES:
   so that building AMIs works out of us-east-1 [GH-679]
 * builder/vmware: Cleanup of VMX keys works properly so cd-rom won't
   get stuck with ISO. [GH-685]
+* builder/vmware: File cleanup is more resilient to file delete races
+  with the operating system. [GH-675]
 
 ## 0.4.0 (November 19, 2013)
 

builder/vmware/step_clean_files.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"github.com/mitchellh/multistep"
 	"github.com/mitchellh/packer/packer"
+	"os"
 	"path/filepath"
 )
 
@@ -48,11 +49,14 @@ func (stepCleanFiles) Run(state multistep.StateBag) multistep.StepAction {
 		if !keep {
 			ui.Message(fmt.Sprintf("Deleting: %s", path))
 			if err = dir.Remove(path); err != nil {
+				// Only report the error if the file still exists
+				if _, serr := os.Stat(path); serr == nil || os.IsNotExist(serr) {
 					state.Put("error", err)
 					return multistep.ActionHalt
 				}
 			}
 		}
+	}
 
 	return multistep.ActionContinue
 }