Enum CommandError 

pub enum CommandError {
    Io(Error),
    Utf8(FromUtf8Error),
    Failed {
        program: String,
        args: Vec<String>,
        status: ExitStatus,
    },
    Parse {
        program: String,
        field: String,
    },
}

What: Error type capturing command spawning, execution, and decoding failures.

Inputs: Generated internally by helper routines.

Output: Implements Display/Error for ergonomic propagation.

Details:

• Represents various failure modes when executing system commands.
• Wraps I/O errors, UTF-8 conversion failures, parsing issues, and non-success exit statuses.

Variants

Io(Error)

I/O error occurred.

Utf8(FromUtf8Error)

UTF-8 decoding error occurred.

Failed

Command execution failed.

Fields

program: String

Program name that failed.

args: Vec<String>

Command arguments.

status: ExitStatus

Exit status of the failed command.

Parse

Parse error when processing command output.

Fields

program: String

Program name that produced invalid output.

field: String

Field name that failed to parse.

Trait Implementations

impl Debug for CommandError

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

Formats the value using the given formatter.

impl Display for CommandError

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

Formats the value using the given formatter.

impl Error for CommandError

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.

impl From<Error> for CommandError

fn from(value: Error) -> Self

Converts to this type from the input type.

impl From<FromUtf8Error> for CommandError

fn from(value: FromUtf8Error) -> Self

Converts to this type from the input type.