If there is a PHP syntax error in a file `ArcanistXHPASTLinter` correctly lints the file (i.e. identifies the syntax error), but `ArcanistPhutilLibraryLinter` just fails miserably.
```
> arc lint
>>> Lint for src/applications/maniphest/mail/ManiphestReplyHandler.php:
Error (XHP1) PHP Syntax Error!
This file contains a syntax error: XHPAST Parse Error: syntax error,
unexpected '}' on line 182
179 ));
180 $event->setUser($user);
181 PhutilEventEngine::dispatchEvent($event)
>>> 182 }
183
184 }
Exception
Some linters failed:
- ArcanistPhutilLibraryLinter: CommandException: Command failed with error #1!
COMMAND
php '/home/joshua/dotfiles/modules/phabricator/libphutil/scripts/phutil_rebuild_map.php' --show --quiet --ugly -- '/home/joshua/workspace/github.com/phacility/phabricator/src'
STDOUT
SYNTAX ERROR!
File: src/applications/maniphest/mail/ManiphestReplyHandler.php
Line: 182
XHPAST Parse Error: syntax error, unexpected '}' on line 182
STDERR
(empty)
(Run with --trace for a full exception trace.)
```