Struct cradle::output::Stderr

pub struct Stderr(pub String);

Stderr allows to capture the stderr of a child process:

use cradle::prelude::*;

// (`Status` is used here to suppress panics caused by `ls`
// terminating with a non-zero exit code.)
let (Stderr(stderr), Status(_)) = run_output!(%"ls does-not-exist");
assert!(stderr.contains("No such file or directory"));

This assumes that the output written to stderr is encoded as utf-8, and will error otherwise.

By default, what is written to stderr by the child process is relayed to the parent’s stderr. However, when Stderr is used, this is switched off.

Tuple Fields

0: String

Trait Implementations

impl Clone for Stderr

fn clone(&self) -> Stderr

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Stderr

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

Formats the value using the given formatter.

impl Output for Stderr