final MavenSession currentSession,
            final MavenProject mavenProject,
            Throwable t,
            final long buildStartTime) {
        // record the error and mark the project as failed
        long buildEndTime = System.currentTimeMillis();
        buildContext.getResult().addException(t);

     * all other executions until finished.
     * We also lock on a given project to forbid a forked lifecycle to be executed concurrently with the project.
     * TODO: ideally, the builder should take care of the ordering in a smarter way
     * TODO: and concurrency issues fixed with MNG-7157
     */
    private class ProjectLock implements AutoCloseable {
        final Lock acquiredAggregatorLock;

  (three value logic: yes, no, don't-care). The requiresOnline
  field in the mojo descriptor has the following semantics:

  [true] Online status is required for this mojo to function
         correctly.

  [false] <<(Default)>> Either status is acceptable for the mojo to
          execute. It doesn't care.

  The majority of mojos will leave the requiresOnline == false,

                    sha1ChecksumObserver = addChecksumObserver(wagon, CHECKSUM_ALGORITHMS[i++]);

                    // reset the retry flag.
                    retry = false;

                    // This should take care of creating destination directory now on
                    if (destination.exists() && !force) {
                        try {

            <type>RepositoryPolicy</type>
          </association>
        </field>
      </fields>
      <!-- prevent modello generation of an incorrect equals method. Could be avoided by using <identity/> tags to mark ID as the only identity field -->
      <codeSegments>
        <codeSegment>
          <version>1.0.0</version>
          <code><![CDATA[
            public boolean equals( Object obj )
            {

            <type>RepositoryPolicy</type>
          </association>
        </field>
      </fields>
      <!-- prevent Modello generation of an incorrect equals method. Could be avoided by using <identity/> tags to mark ID as the only identity field -->
      <codeSegments>
        <codeSegment>
          <version>1.0.0/1.1.0</version>
          <code>
            <![CDATA[
    /**