When I enable linter cache by adding `"arc.lint.cache": true` to the `.arcconfig` file of the project, then during `arc lint` command execution I'm getting following PHP notices:
```
[2015-01-02 13:44:15] ERROR 2: file_exists(): Unable to find the wrapper "svn" - did you forget to enable it when you configured PHP? at [.../libphutil/src/filesystem/Filesystem.php:885]
#0 file_exists(string) called at [<phutil>/src/filesystem/Filesystem.php:885]
#1 Filesystem::pathExists(string) called at [<arcanist>/src/workflow/ArcanistWorkflow.php:1591]
#2 ArcanistWorkflow::getRepositoryVersion() called at [<arcanist>/src/workflow/ArcanistLintWorkflow.php:240]
#3 ArcanistLintWorkflow::run() called at [<arcanist>/scripts/arcanist.php:343]
```
It happens due `$engine->setRepositoryVersion($this->getRepositoryVersion());` code in https://secure.phabricator.com/diffusion/ARC/browse/master/src/workflow/ArcanistLintWorkflow.php;0352db802e9ddff35286b247e27a89ea11a78929$232 where `getRepositoryVersion` call tried to do `Filesystem::pathExists` on the `svn://username@repository.host.com/path/to/file.php` path: https://secure.phabricator.com/diffusion/ARC/browse/master/src/workflow/ArcanistWorkflow.php;0352db802e9ddff35286b247e27a89ea11a78929$1562
I guess it's a mistake in the `ArcanistSubversionAPI::getChangedFiles` method, that should return paths in working copy instead of paths in repository.