Enum Error 

pub enum Error {
    Unreadable {
        path: PathBuf,
        cause: Error,
    },
    Malformed {
        path: PathBuf,
        cause: String,
    },
}

Why a layer could not be read.

A policy source that fails is not a policy source that says nothing. An administrator’s deny list that cannot be read is the case concept 10 cares about most, and answering None for it would permit whatever it was written to refuse — quietly, and for as long as the typo survives. So reading a layer can fail, and the failure travels to whoever is deciding.

Variants

Unreadable

The file is there and could not be read.

Fields

path: PathBuf

The file.

cause: Error

What the filesystem said.

Malformed

The file is there and is not what it claims to be.

Fields

path: PathBuf

The file.

cause: String

What was wrong with it.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.