bevyengine/bevy · error · AssetWriterError::Io

not empty

Error message

not empty

What it means

Returned by the memory writer's remove_empty_directory when the directory exists but still contains assets, metadata, or subdirectories. Modeled on filesystem behavior where rmdir fails on non-empty directories, the caller must empty the directory first.

Source

Thrown at crates/bevy_asset/src/io/memory.rs:588

            return Err(AssetWriterError::Io(Error::new(
                ErrorKind::NotFound,
                "no such dir",
            )));
        }
        Ok(())
    }

    async fn remove_empty_directory<'a>(&'a self, path: &'a Path) -> Result<(), AssetWriterError> {
        let Some(dir) = self.root.get_dir(path) else {
            return Err(AssetWriterError::Io(Error::new(
                ErrorKind::NotFound,
                "no such dir",
            )));
        };

        let dir = dir.0.read().unwrap();
        if !dir.assets.is_empty() || !dir.metadata.is_empty() || !dir.dirs.is_empty() {
            return Err(AssetWriterError::Io(Error::new(
                ErrorKind::DirectoryNotEmpty,
                "not empty",
            )));
        }

        self.root.remove_dir(path);
        Ok(())
    }

    async fn remove_assets_in_directory<'a>(
        &'a self,
        path: &'a Path,
    ) -> Result<(), AssetWriterError> {
        let Some(dir) = self.root.get_dir(path) else {
            return Err(AssetWriterError::Io(Error::new(
                ErrorKind::NotFound,
                "no such dir",
            )));

View on GitHub (pinned to 396ca72708)

Solutions

1. Remove all contained assets, meta files, and subdirectories before calling remove_empty_directory
2. Use the non-empty-tolerant remove_directory instead if recursive deletion is intended
3. Check the directory's contents first if emptiness is not guaranteed

When it happens

Trigger: Thrown at crates/bevy_asset/src/io/memory.rs:588 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of bevyengine/bevy@396ca72708 (2026-08-20). Data as JSON: /api/errors/77665f668957ef03. Report an issue: GitHub.