```foo().map_err(|err| err.description().to_string...
# developmentw
witty-crayon-22786
10/17/2017, 5:23 PM Copy code
foo().map_err(|err| err.description().to_string())?;witty-crayon-22786
10/17/2017, 5:23 PMfoo().map_err(|err| err.description().to_string())?;