Unable to stat files with UTF characters

We ran into a project with a file with an emoji filename (no really), and looks like `stat` chokes:

```
Caused by: net.rubygrapefruit.platform.NativeException: Could not get UNIX mode on /mnt/builds/slave/workspace/project/src/node_modules/.bin/🐹: file does not exist.
at net.rubygrapefruit.platform.internal.DefaultPosixFiles.getMode(DefaultPosixFiles.java:68)
at org.gradle.internal.nativeintegration.filesystem.services.NativePlatformBackedStat.getUnixMode(NativePlatformBackedStat.java:34)
at org.gradle.internal.nativeintegration.filesystem.services.GenericFileSystem.getUnixMode(GenericFileSystem.java:74)
... 83 more
```

I'd guess if this affects emojis, it might affect any file UTF-8 characters?