Using `listen` in Cocoa application

I've tried to use `listen` in Cocoa application (using https://github.com/ryanmcgrath/cacao)

Application run in segmentation fault on first run, outputs 

```
     Running `target/debug/lightswitch`
[1]    10513 trace trap  RUST_BACKTRACE=1 cargo run
```

Example: https://github.com/Sergei1984/lightswitch/tree/rdev-example