Pyrus exit code wrong?

This doesn't quite seem right - pyrus has an unhandled exception, but appears to have terminated the script normally - exit code 0. Is there an error handler in the assorted pyrus commands that could catch exceptions, provide human readable messages, and the appropriate exit code? Pyrus version 2.0.0a4 SHA-1: 72271D92C3AA1FA96DF9606CD538868544609A52 1020 <http://travis-ci.org/#!/CloCkWeRX/phpDocumentor2/jobs/944975/L1020>Using PEAR installation found at /home/vagrant/.phpenv/versions/5.3.10/share/pyrus/.pear 1021 <http://travis-ci.org/#!/CloCkWeRX/phpDocumentor2/jobs/944975/L1021>Creating phpDocumentor-2.0.0a1.tgz 1022 <http://travis-ci.org/#!/CloCkWeRX/phpDocumentor2/jobs/944975/L1022>Pyrus\Package\Exception: Cannot locate PEAR2/Exception.php in phar:///home/vagrant/.phpenv/versions/5.3.10/bin/pyrus.phar/Pyrus-2.0.0a4/PEAR2/ 1023 <http://travis-ci.org/#!/CloCkWeRX/phpDocumentor2/jobs/944975/L1023> 1024 <http://travis-ci.org/#!/CloCkWeRX/phpDocumentor2/jobs/944975/L1024>Done. Build script exited with: 0