failing with:


0: {
    logMessage:  "original error: parsing time "" as "2006-01-02T15:04:05.999999999": cannot parse "" as "2006""     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791490Z"     
   }
   1: {
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791493Z"     
   }
   2: {
    logMessage:  "goroutine 19007312:"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791495Z"     
   }
   3: {
    logMessage:  "#0 infra/appengine/crosskylabadmin/app/clients/swarming.go:285 - clients.TimeSinceBotTask()"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791497Z"     
   }
   4: {
    logMessage:  "  reason: swarming returned corrupted abandoned timestamp"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791499Z"     
   }
   5: {
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791501Z"     
   }
   6: {
    logMessage:  "From frame 0 to 1, the following wrappers were found:"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791503Z"     
   }
   7: {
    logMessage:  "  internal reason: MultiError 2/2: following first non-nil error."     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791516Z"     
   }
   8: {
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791519Z"     
   }
   9: {
    logMessage:  "#1 infra/appengine/crosskylabadmin/app/frontend/tasker.go:156 - frontend.triggerRepairOnRepairFailedForBot()"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791522Z"     
   }
   10: {
    logMessage:  "  reason: failed to determine time since last attempt"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791524Z"     
   }
   11: {
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791525Z"     
   }
   12: {
    logMessage:  "#2 infra/appengine/crosskylabadmin/app/frontend/tasker.go:130 - frontend.(*TaskerServerImpl).TriggerRepairOnRepairFailed.func2()"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791527Z"     
   }
   13: {
    logMessage:  "#3 infra/appengine/crosskylabadmin/app/frontend/tasker.go:263 - frontend.createTasksPerBot.func1.1()"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791529Z"     
   }
   14: {
    logMessage:  "#4 go.chromium.org/luci/common/sync/parallel/runner.go:51 - parallel.(*WorkItem).execute()"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791531Z"     
   }
   15: {
    logMessage:  "#5 go.chromium.org/luci/common/sync/parallel/runner.go:145 - parallel.(*Runner).dispatchLoopBody.func1()"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791533Z"     
   }
   16: {
    logMessage:  "#6 runtime/asm_amd64.s:2337 - runtime.goexit()"     
    severity:  "ERROR"     
    time:  "2018-07-11T22:34:08.791534Z"     
   }