extrasafe 0.5.1

Make your code extrasafe by reducing what it can access.
Documentation 
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use extrasafe::SafetyContext;
use syscalls::Sysno;

#[test]
#[should_panic(expected = "NoRulesEnabled")]
/// Extrasafe fails by default if there are no rules applied
fn hello_void() {
    SafetyContext::new().apply_to_current_thread().unwrap();

    println!("Hello, World!");
}

#[test]
fn hello_world() {
    SafetyContext::new()
        .enable(Sysno::write)
        .unwrap()
        .apply_to_current_thread()
        .unwrap();

    println!("Hello, World!");
}