the-benchmarker/web-frameworks · error

Failed to get current directory

Error message

Failed to get current directory

What it means

reinhardt-web's get_settings() reads REINHARDT_ENV and then calls std::env::current_dir() to locate the project's settings directory. If the operating system cannot determine the current working directory (process cwd deleted, or unavailable), the expect() panics with "Failed to get current directory".

Solutions

1. Ensure the process is started with a valid, existing working directory (check container Workdir, service WorkingDirectory, test runner cwd)
2. Do not delete or unmount the directory the process was started from while it is running
3. If you control the code, replace expect with graceful handling: fall back to a configured base dir or a settings path from an env var instead of relying on cwd
4. Pass the project root explicitly (e.g. REINHARDT_BASE_DIR env var) so settings lookup is independent of cwd

Example fix

// before
let base_dir = env::current_dir().expect("Failed to get current directory");

// after
let base_dir = env::var("REINHARDT_BASE_DIR")
    .map(PathBuf::from)
    .or_else(|_| env::current_dir())
    .expect("Failed to determine project base directory");

// before calling get_settings(), verify the process cwd is usable
use std::env;
match env::current_dir() {
    Ok(dir) if dir.exists() => println!("cwd ok: {:?}", dir),
    _ => {
        eprintln!("current working directory is invalid; start the process from an existing directory");
        std::process::exit(1);
    }
}

fn cwd_is_valid() -> bool {
    std::env::current_dir().map(|d| d.exists()).unwrap_or(false)
}

// get_settings panics rather than returning Result, so catch the unwind if you embed it
let settings = std::panic::catch_unwind(reinhardt_web::config::settings::get_settings)
    .unwrap_or_else(|_| {
        eprintln!("settings unavailable: check working directory and REINHARDT_ENV");
        std::process::exit(1);
    });

When it happens

Trigger: Calling get_settings() (e.g. from test_get_settings) while the process's working directory has been unlinked, or in a sandbox/runtime where cwd is not accessible; current_dir() returns Err and expect unwraps it into a panic.

Common situations: Tests run in a temp directory that a cleanup step deletes mid-run; a long-lived process whose cwd was removed by another job; container runtimes started with an invalid Workdir; cwd on a mounted volume that was unmounted.

Related errors

• Failed to build/compose settings for profile
• Failed to parse app.zl
• Failed to parse app.zl

AI-assisted analysis of the-benchmarker/web-frameworks@3795a31d72 (2026-09-15). Data as JSON: /api/errors/434b17049110bb9b. Report an issue: GitHub.

Appendix: source

Thrown at rust/reinhardt-web/src/config/settings.rs:77

///
/// ```no_run
/// use server::config::settings::get_settings;
///
/// let settings = get_settings();
/// ```
///
/// # Panics
///
/// Panics if:
/// - Settings files cannot be read
/// - Settings cannot be deserialized
/// - Required settings are missing
pub fn get_settings() -> ProjectSettings {
    let profile_str = env::var("REINHARDT_ENV").unwrap_or_else(|_| "local".to_string());
    let profile = Profile::parse(&profile_str);

    // Get the project root directory (parent of src/)
    let base_dir = env::current_dir().expect("Failed to get current directory");
    let settings_dir = base_dir.join("settings");

    // Build settings by merging sources in priority order.
    // `build_composed::<T>()` uses `MergeStrategy::Deep` by default, so a
    // single key in `production.toml` overrides only that key — sibling
    // entries inside the same nested table inherit from `base.toml`.
    SettingsBuilder::new()
        .profile(profile)
        // Lowest priority: Default values
        .add_source(DefaultSource::new())
        // Medium priority: Base TOML file
        .add_source(TomlFileSource::new(settings_dir.join("base.toml")))
        // Profile priority: Environment-specific TOML file
        .add_source(TomlFileSource::new(
            settings_dir.join(format!("{}.toml", profile_str)),
        ))
        // Highest priority: explicit process environment overrides
        .add_source(HighPriorityEnvSource::new().with_prefix("REINHARDT_"))

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