do you know if there's any particular nix related considerations for rust development? this error seems like it might be a nix thing and is a bit peculiar:
```
error: component download failed for rust-src: could not rename downloaded file from '/home/fly/.rustup/downloads/43b2187da2752307fb710914805cb685b35308acb22413f1616ad04448a598f1.partial' to '/home/fly/.rustup/downloads/43b2187da2752307fb710914805cb685b35308acb22413f1616ad04448a598f1'
```