Index: abstract_adapter.rb
===================================================================
--- abstract_adapter.rb	(revision 1694)
+++ abstract_adapter.rb	(working copy)
@@ -176,6 +176,9 @@
               io.close_write
               block.call(io) if block_given?
             end
+            if $? && $?.exitstatus != 0
+              raise Errno::ENOENT, "Exit status is #{$?.exitstatus}" 
+            end
           rescue Errno::ENOENT => e
             msg = strip_credential(e.message)
             # The command failed, log it and re-raise