Hmbown/CodeWhale · error

create isolated home

Error message

create isolated home

What it means

This is a panic from `std::fs::create_dir_all(&home)` inside the test `confirmed_opt_out_keeps_configured_secrets_visible_to_the_model`. It fails when the isolated home directory cannot be created inside the tempdir — typically because the tempdir vanished or permissions/encoding issues prevented directory creation.

Solutions

1. Verify the tempdir returned by tempfile is writable before creating subdirectories
2. Check path length limits (MAX_PATH) if TMPDIR is deeply nested
3. Rerun outside restrictive sandboxes or grant the test user create-directory permissions

Example fix

// before
std::fs::create_dir_all(&home).expect("create isolated home");
// after
std::fs::create_dir_all(&home).expect("create isolated home: check tempdir permissions and path length");

assert!(fs::create_dir_all(&home).is_ok(), "cannot create isolated home under {}", tmp.path().display());

When it happens

Trigger: Running the test when `tmp.path().join("home")` cannot be created: parent tempdir removed mid-test, path too long, or filesystem denying mkdir under the temp root.

Common situations: Overly restrictive sandbox/CI policies blocking mkdir in temp paths; antivirus or security software deleting temp content; extremely long TMPDIR paths on Windows.

Understand the failure class

Background: mkdir permission denied (EACCES): failed to create directory errors explained — this error's family across 32 libraries.

Related errors

• store into a fresh directory
• tempdir
• approval log has no parent
• commit
• credential fixture

AI-assisted analysis of Hmbown/CodeWhale@73e0f67d83 (2026-09-22). Data as JSON: /api/errors/e3d4c95de6d9b528. Report an issue: GitHub.

Appendix: source

Thrown at crates/tui/src/client.rs:8514

            let client = client_with_config_secret_sentinels();
            let ordinary = "tests passed: 42\nREADME.md updated\n";
            let prepared =
                client.prepare_model_bound_request(request_with_tool_result(ordinary.to_string()));
            assert_eq!(tool_result_content(&prepared), ordinary);
        }
    }

    /// The `[redaction] model_bound = "disabled"` opt-out, once confirmed on
    /// the startup gate, must let the model see tool output byte-for-byte —
    /// including configured secrets and credential-shaped values that the
    /// default masking would have removed (#5546 keeps code quotable; this
    /// opt-out goes further and keeps credentials quotable too).
    #[test]
    fn confirmed_opt_out_keeps_configured_secrets_visible_to_the_model() {
        let _env_lock = crate::test_support::lock_test_env();
        let tmp = tempfile::tempdir().expect("tempdir");
        let home = tmp.path().join("home");
        std::fs::create_dir_all(&home).expect("create isolated home");
        let _home = crate::test_support::EnvVarGuard::set("HOME", &home);
        let _userprofile = crate::test_support::EnvVarGuard::set("USERPROFILE", &home);
        let codewhale_home = tmp.path().join("codewhale-home");
        let _codewhale_home =
            crate::test_support::EnvVarGuard::set("CODEWHALE_HOME", &codewhale_home);
        std::fs::create_dir_all(&codewhale_home).expect("create config home");
        std::fs::write(
            codewhale_home.join("config.toml"),
            "[redaction]\nmodel_bound = \"disabled\"\n",
        )
        .expect("write opt-out request");
        codewhale_config::redaction::record_model_bound_disabled_confirmation(
            &codewhale_home.join("config.toml"),
        )
        .expect("record opt-out confirmation");

        let client = CodewhaleClient::new(&Config {
            loaded_config_path: Some(codewhale_home.join("config.toml")),

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