Crash on reporting results

[rictic]

$ tach --config tach.json 
Running benchmarks

[==========================================================] done
TypeError: Reduce of empty array with no initial value
    at Array.reduce (<anonymous>)
    at sumOf (/Users/rictic/.nvm/versions/node/v12.4.0/lib/node_modules/tachometer/src/stats.ts:142:15)
    at Object.summaryStats (/Users/rictic/.nvm/versions/node/v12.4.0/lib/node_modules/tachometer/src/stats.ts:51:15)
    at /Users/rictic/.nvm/versions/node/v12.4.0/lib/node_modules/tachometer/src/cli.ts:635:44
    at Array.map (<anonymous>)
    at makeResults (/Users/rictic/.nvm/versions/node/v12.4.0/lib/node_modules/tachometer/src/cli.ts:633:31)
    at automaticMode (/Users/rictic/.nvm/versions/node/v12.4.0/lib/node_modules/tachometer/src/cli.ts:673:27)
    at processTicksAndRejections (internal/process/task_queues.js:89:5)
    at Object.main (/Users/rictic/.nvm/versions/node/v12.4.0/lib/node_modules/tachometer/src/cli.ts:390:14)

Config:

{
  "$schema": "https://raw.githubusercontent.com/Polymer/tachometer/master/config.schema.json",
  "resolveBareModules": false,
  "sampleSize": 10,
  "timeout": 0,
  "benchmarks": [
    {
      "browser": "chrome-headless",
      "measurement": "global",
      "expand": [
        {
          "name": "v1 ytcp-video-row",
          "url": "http://localhost:8001/?tag=ytcp-video-row"
        },
        {
          "name": "v2 ytcp-video-row",
          "url": "http://localhost:8002/?tag=ytcp-video-row"
        },
        {
          "name": "v1 ytcp-video-metadata-editor-section",
          "url": "http://localhost:8001/?tag=ytcp-video-metadata-editor-section"
        },
        {
          "name": "v2 ytcp-video-metadata-editor-section",
          "url": "http://localhost:8002/?tag=ytcp-video-metadata-editor-section"
        }
      ]
    }
  ]
}

[rictic]

Hm, I think the issue was probably related to the fact that I didn't have the servers running, so there would have been no results reported.