Feature #3988: when the remote probes are not successfully executed, there is no information in oned.log

src/im_mad/remotes/common.d/collectd-client.rb

@@ -65,9 +65,9 @@ class CollectdClient
     end
 
     def run_probes
-        data   = `#{@run_probes_cmd}`
+        data   = `#{@run_probes_cmd} 2>&1`
         code   = $?.exitstatus == 0
-        data   = "Error executing probes" if !code
+
         data64 = Base64::encode64(data).strip.delete("\n")
 
         [data64, code]