command/build: if any builds fail, exit with 1 exit status

CHANGELOG.md

@@ -16,6 +16,7 @@ IMPROVEMENTS:
 BUG FIXES:
 
 * core: build names no longer cause invalid config errors. [GH-197]
+* command/build: If any builds fail, exit with non-zero exit status.
 * communicator/ssh: SCP exit codes are tested and errors are reported. [GH-195]
 
 ## 0.2.0 (July 16, 2013)

command/build/command.go

@@ -250,6 +250,11 @@ func (c Command) Run(env packer.Environment, args []string) int {
 		env.Ui().Say("\n==> Builds finished but no artifacts were created.")
 	}
 
+	if len(errors) > 0 {
+		// If any errors occurred, exit with a non-zero exit status
+		return 1
+	}
+
 	return 0
 }