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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - streams/readable-stream.html is very flaky"
   href="https://bugs.webkit.org/show_bug.cgi?id=144455">144455</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>streams/readable-stream.html is very flaky
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>528+ (Nightly build)
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Tools / Tests
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>ap&#64;webkit.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>calvaris&#64;igalia.com, youennf&#64;gmail.com
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        <pre>streams/readable-stream.html fails quite a bit, especially on slower bots.

<a href="https://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=streams%2Freadable-stream.html">https://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=streams%2Freadable-stream.html</a>

&#64;&#64; -2,5 +2,5 &#64;&#64;
 PASS ReadableStream can't be constructed with garbage 
 PASS ReadableStream start should be called with the proper parameters 
 PASS ReadableStream should be able to call start method within prototype chain of its source 
-PASS A readable stream controller methods should throw if its readablestream is collected 
+FAIL A readable stream controller methods should throw if its readablestream is collected assert_throws: function &quot;function () { controller.close(); }&quot; did not throw

This is very easily reproducible locally with a debug build:

run-webkit-tests streams/readable-stream.html --repeat 100 -f
...
7 tests ran as expected, 93 didn't</pre>
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