Enum ConfigError 

#[non_exhaustive]
pub enum ConfigError {
    Io {
        path: PathBuf,
        source: Error,
    },
    Parse {
        path: Option<PathBuf>,
        source: Error,
    },
}

Failure modes when loading a config. A missing file is not an error; callers treat it as “use defaults.”

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Io

fs::read failed for a reason other than NotFound. Carries the offending path so the stderr diagnostic is self-describing.

Fields

path: PathBuf

source: Error

Parse

Invalid TOML. path is None for in-memory parses.

Fields

path: Option<PathBuf>

source: Error

Trait Implementations

impl Debug for ConfigError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ConfigError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for ConfigError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.