pub fn dup_stderr() -> Result<PipeWriter>Expand description
Get a duplicated copy of the current process’s standard error, as a
PipeWriter.
Writing directly to this pipe isn’t recommended, because it’s not
synchronized with std::io::stderr. PipeWriter implements
Into<Stdio>, so it can be passed directly to Command::stdout or
Command::stderr. This can be useful if you want the child’s stdout to go
to the parent’s stderr.