clippy error - 2020-07-20

[rarewin]

https://github.com/rarewin/rust-coreutils/actions/runs/155589096

19 | |         .value_of("wrap")
20 | |         .ok_or_else(|| Base64Error::InvalidParam("--wrap".to_string()))?
21 | |         .parse::<usize>()
22 | |         .or_else(|_| Err(Error::new(Base64Error::InvalidParam("--wrap".to_string()))))?;
   | |______________________________________________________________________________________^
   |
   = note: `-D clippy::bind-instead-of-map` implied by `-D warnings`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
help: try this
   |
18 |     let wrap = m
19 |         .value_of("wrap")
20 |         .ok_or_else(|| Base64Error::InvalidParam("--wrap".to_string()))?
21 |         .parse::<usize>().map_err(|_| Error::new(Base64Error::InvalidParam("--wrap".to_string())))?;
   |

error: aborting due to previous error
##[error]aborting due to previous error
error: could not compile `rust-coreutils`.
##[error]could not compile `rust-coreutils`.
To learn more, run the command again with --verbose.
##[error]The process '/usr/share/rust/.cargo/bin/cargo' failed with exit code 101