worked everywhere that I know of except for one place: when running the GWT
    util.concurrent tests under Guava.

    The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see https://goo.gl/pRV3Yn for details.

    The summary is that it ignores one file in favor of the other.
    util.concurrent, like nearly all our packages, has two .gwt.xml files: one

    Test that multiple artifact repository declarations with the same id cause a validation error.
  </description>

  <repositories>
    <repository>
      <id>one</id>
      <url>https://repo1.maven.org/maven2</url>
    </repository>
    <repository>
      <id>one</id>
      <url>https://repository.codehaus.org/</url>
    </repository>
  </repositories>

<?xml version="1.0" encoding="UTF-8"?>

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