cargo fix --edition-idioms

2 files changed, 1 insertions, 3 deletions

diff --git a/2018/src/day9.rs b/2018/src/day9.rs
index 2432007..114f1c7 100644
--- a/2018/src/day9.rs
+++ b/2018/src/day9.rs
@@ -110,7 +110,7 @@ impl<T: Copy> Chain<T> {
 }
 
 impl<T: Copy + fmt::Display> fmt::Display for Chain<T> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         if self.left.len() == 0 {
             if self.right.len() == 0 { return Ok(()); }
             write!(f, "({})", self.right[0])?;
diff --git a/2018/src/main.rs b/2018/src/main.rs
index 1e01f55..49dbdf6 100644
--- a/2018/src/main.rs
+++ b/2018/src/main.rs
@@ -1,6 +1,4 @@
 #[macro_use] extern crate lazy_static;
-extern crate regex;
-extern crate argparse;
 
 use std::io;
 use std::io::{BufRead, BufReader, Error, ErrorKind, Read};