<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Fix unit test and bug fix for 'pull-os-versions.js' script."
   href="https://bugs.webkit.org/show_bug.cgi?id=169701#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Fix unit test and bug fix for 'pull-os-versions.js' script."
   href="https://bugs.webkit.org/show_bug.cgi?id=169701">bug 169701</a>
              from <span class="vcard"><a class="email" href="mailto:rniwa&#64;webkit.org" title="Ryosuke Niwa &lt;rniwa&#64;webkit.org&gt;"> <span class="fn">Ryosuke Niwa</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=304561&amp;action=diff" name="attach_304561" title="Patch">attachment 304561</a> <a href="attachment.cgi?id=304561&amp;action=edit" title="Patch">[details]</a></span>
Patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=304561&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=304561&amp;action=review</a>

<span class="quote">&gt; Websites/perf.webkit.org/ChangeLog:9
&gt; +        Fix 'pull-os-versions.js' does not fetch new builds and report.</span >

This sentence has two verbs.
Fix the bug that 'pull-os-versions.js' does not fetch new builds and report?

<span class="quote">&gt; Websites/perf.webkit.org/tools/pull-os-versions.js:34
&gt; +        return fetchers.reduce((promise, fetcher) =&gt; {
&gt; +            return promise.then(fetcher.fetchAndReportNewBuilds());
&gt; +        }, Promise.resolve());</span >

Are you sure you really meant to call chain the promise returned by fetcher.fetchAndReportNewBuilds()?
If you want to call each promise in sentience, you need to do:
(promise, fetcher) =&gt; {
    return promise.then(() =&gt; fetcher.fetchAndReportNewBuilds());
}

Perhaps you want to create a new helper function that sequentialize promises?</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>