openai/codex · error · std::io::Error

failed to read {context} {}: {e}

Error message

failed to read {context} {}: {e}

What it means

Error "failed to read {context} {}: {e}" thrown in openai/codex.

Source

Thrown at codex-rs/core/src/config/mod.rs:4361

    /// If `path` is `Some`, attempts to read the file at the given path and
    /// returns its contents as a trimmed `String`. If the file is empty, or
    /// is `Some` but cannot be read, returns an `Err`.
    async fn try_read_non_empty_file(
        fs: &dyn ExecutorFileSystem,
        path: Option<&AbsolutePathBuf>,
        context: &str,
    ) -> std::io::Result<Option<String>> {
        let Some(path) = path else {
            return Ok(None);
        };

        let path_uri = PathUri::from_abs_path(path);
        let contents = fs
            .read_file_text(&path_uri, ReadFileOptions::default(), /*sandbox*/ None)
            .await
            .map_err(|e| {
                std::io::Error::new(
                    e.kind(),
                    format!("failed to read {context} {}: {e}", path.display()),
                )
            })?;

        let s = contents.trim().to_string();
        if s.is_empty() {
            Err(std::io::Error::new(
                std::io::ErrorKind::InvalidData,
                format!("{context} is empty: {}", path.display()),
            ))
        } else {
            Ok(Some(s))
        }
    }

    pub fn set_windows_sandbox_enabled(&mut self, value: bool) {
        self.permissions.windows_sandbox_mode = if value {

View on GitHub (pinned to 339751715c)

Solutions

1. Check that the reported file exists and is readable.

When it happens

Trigger: Thrown at codex-rs/core/src/config/mod.rs:4361 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/56e7b6fc7b293f8e. Report an issue: GitHub.