Milo: Prefetch logs that are failures

milo/appengine/swarming/html_data.go

 // Copyright 2015 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package swarming
 
 import (
         "fmt"
         "io/ioutil"
         "path/filepath"
@@ skipping 69 matching lines @@
         }
         results := []settings.TestBundle{
                 {
                         Description: "Basic successful build",
                         Data:        templates.Args{"Build": basic},
                 },
         }
         c := context.Background()
         c, _ = testclock.UseTime(c, time.Date(2016, time.March, 14, 11, 0, 0, 0, time.UTC))
         for _, tc := range getTestCases() {
-                build, err := swarmingBuildImpl(c, "foo", "debug", tc)
+                build, prefetch, err := swarmingBuildImpl(c, "foo", "debug", tc)
                 if err != nil {
                         panic(fmt.Errorf("Error while processing %s: %s", tc, err))
                 }
                 results = append(results, settings.TestBundle{
                         Description: tc,
-                        Data:        templates.Args{"Build": build},
+                        Data:        templates.Args{"Build": build, "Prefetch": prefetch},
                 })
         }
         return results
 }