Method collect_stderr

tests/support/mod.rs:53–60

(&mut self)

    }

    pub(crate) fn collect_stderr(&mut self) -> String {
        let _ = self.child.kill();
        let _ = self.child.wait();
        self.stderr
            .take()
            .and_then(|reader| reader.join().ok())
            .unwrap_or_default()
    }
}

impl Drop for ChildGuard {