GitLab

Fix:

```rust
 --> build.rs:8:24
  |
8 |     cbindgen::generate(crate_dir)
  |                        ^^^^^^^^^ expected &str, found struct `std::string::String`
  |
  = note: expected type `&str`
             found type `std::string::String`
  = help: try with `&crate_dir`
```