Function sql_db_mapper::format_rust

pub fn format_rust(
    value: &str, 
    rustfmt_config: Option<&str>, 
    rustfmt_config_path: Option<&str>
) -> String

Calls rustfmt (the program) on the input

On any rustfmt error stderr is written to and a copy of the input is returned

Can panic if acquiring/writing to stdin fails or the the text written to stdout or stderr by rustfmt is not valid utf8