Enum Error

pub enum Error {
    BadArgument(NulError),
    Errno(Errno),
}

Represents an error calling exec.

This is marked #[must_use], which is unusual for error types. Normally, the fact that Result is marked in this fashion is sufficient, but in this case, this error is returned bare from functions that only return a result if they fail.

Variants

BadArgument(NulError)

One of the strings passed to execv contained an internal null byte and can’t be passed correctly to C.

Errno(Errno)

An error was returned by the system.

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

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

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.

impl From<NulError> for Error

fn from(err: NulError) -> Error

Convert a NulError into an ExecError.