Function process_using_child 

pub fn process_using_child<C: AsRef<OsStr>, I: IntoIterator<Item = S>, S: AsRef<OsStr>>(
    command: C,
    args: I,
    data: &[u8],
) -> Result<(Vec<u8>, Vec<u8>), ChildCommandError>

Write data to a child process’ stdin, and return the process’ stdout and stderr.

Panics

• If handle to child’s stdin could not be taken.
• If the writer thread panics.