Update to Rust 2018

Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "git-anger-management"
 version = "0.5.1"
+edition = "2018"
 authors = ["Sondre Nilsen <nilsen.sondre@gmail.com>"]
 description = "Count your naughty words in git commit messages"
 repository = "https://github.com/sondr3/git-anger-management"

src/bin.rs

@@ -1,11 +1,5 @@
-extern crate git2;
-extern crate git_anger_management as gam;
-extern crate indicatif;
-extern crate structopt;
-
-use gam::Repo;
-use gam::{naughty_word, split_into_clean_words};
 use git2::{Commit, Repository};
+use git_anger_management::{naughty_word, split_into_clean_words, Repo};
 use indicatif::{ProgressBar, ProgressStyle};
 use std::env;
 use std::error::Error;
@@ -33,7 +27,7 @@ struct Cli {
     directory: Option<PathBuf>,
 }
 
-pub fn main() -> Result<(), Box<Error>> {
+pub fn main() -> Result<(), Box<dyn Error>> {
     let start = Instant::now();
     let opt = Cli::from_args();
     let path = match opt.directory {
@@ -101,7 +95,7 @@ pub fn main() -> Result<(), Box<Error>> {
     }
 
     println!("{}", repo);
-    for mut author in repo.authors.values() {
+    for author in repo.authors.values() {
         if author.is_naughty() {
             println!("{}", author);
         }

src/core.rs

@@ -1,4 +1,5 @@
 use hashbrown::HashSet;
+use lazy_static::lazy_static;
 
 pub static CURSES_FILE: &str = include_str!("words.txt");
 lazy_static! {

src/lib.rs

@@ -67,26 +67,20 @@
 //!
 //! Or look at the help by running `git anger-management -h`.
 #![cfg_attr(feature = "fail-on-warnings", deny(warnings))]
-#![cfg_attr(feature = "cargo-clippy", deny(clippy))]
 #![forbid(unsafe_code)]
 #![deny(
+    clippy::all,
     missing_docs,
     missing_debug_implementations,
     missing_copy_implementations,
     trivial_casts,
     unused_import_braces,
     unused_allocation
 )]
-
-#[macro_use]
-extern crate lazy_static;
-extern crate hashbrown;
-extern crate indicatif;
-
 mod author;
 mod core;
 mod repo;
 
-pub use author::Author;
-pub use core::{naughty_word, split_into_clean_words};
-pub use repo::Repo;
+pub use crate::author::Author;
+pub use crate::core::{naughty_word, split_into_clean_words};
+pub use crate::repo::Repo;

src/repo.rs

@@ -1,4 +1,4 @@
-use author::Author;
+use crate::author::Author;
 use hashbrown::HashMap;
 use std::fmt;