update for rust 2018

2 files changed, 3 insertions, 10 deletions

diff --git a/Cargo.toml b/Cargo.toml
index c1f81fd..5fe7438 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "rustlings"
 version = "0.1.0"
 authors = ["olivia <olivia@fastmail.com>"]
+edition = "2018"
 
 [dependencies]
 clap = "2.32.0"
diff --git a/src/main.rs b/src/main.rs
index 3cdd0b4..7187c03 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,21 +1,13 @@
-#[macro_use]
-extern crate clap;
-extern crate console;
-extern crate indicatif;
-extern crate syntect;
-extern crate notify;
-
-use clap::{App, Arg, SubCommand};
+use clap::{App, Arg, SubCommand, crate_version};
 use console::{style, Emoji};
 use indicatif::ProgressBar;
 use syntect::easy::HighlightFile;
 use syntect::parsing::SyntaxSet;
 use syntect::highlighting::{ThemeSet, Style};
-use syntect::util::{as_24_bit_terminal_escaped, LinesWithEndings};
+use syntect::util::{as_24_bit_terminal_escaped};
 use std::fs::remove_file;
 use std::io::BufRead;
 use std::process::Command;
-use std::fs::read_to_string;
 use std::sync::mpsc::channel;
 use std::time::Duration;
 use notify::DebouncedEvent;