GOROOT might contains GOPATH, handle permissions.

src/main.rs

@@ -319,6 +319,10 @@ fn main() -> Result<()> {
                         let update = latest_status.download_path();
 
                         println!("Clearing GOROOT {}", go_root);
+
+                        // GOROOT might contain GOPATH files
+                        // Fix permissions before attempting to remove.
+                        recursive_remove_readonly(&go_path)?;
                         remove_dir_all(&go_root)?;
                         create_dir_all(&go_root)?;