sysexit

Function is_error

Source 
pub fn is_error(status: ExitStatus) -> bool
Expand description

Determines if the provided std::process::ExitStatus was unsuccessful.

Example:

use std::process;
use sysexit;

let exit_status = process::Command::new("false")
    .status()
    .expect("failed to run false(1)");
assert!(sysexit::is_error(exit_status));