use std::io;
use std::error::Error;
pub fn io_error(action: &str, file: &str, err: &io::Error) -> String {
format!("IO Error when attempting to {} `{}`: {}\n{}", action, file, err.to_string(),
match err.source() {
None => "".to_string(),
Some(cause) => cause.to_string()
})
}