Struct Error 

pub struct Error { /* private fields */ }

An error encountered during deserialization.

An error can be a problem with the type being deserialized into (sometimes referred to as a “development error”), a problem with the user input, or a specific overridden option requested by the user (such as help or version information).

Error provides a human-readable message through its Display implementation. Common practice is to print the error out and exit the program.

use std::process::exit;

if let Err(error) = serde_args::from_env::<usize>() {
    println!("{error}");
    exit(1);
}

Formatting

Error allows formatting using ANSI color sequences. This will print help messages and error messages with color formatting applied to it in terminals that support ANSI escape sequences. This formatting can be requested using the “alternate” formatting flag #.

use std::process::exit;

if let Err(error) = serde_args::from_env::<usize>() {
    println!("{error:#}");
    exit(1);
}

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, formatter: &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.