3 files changed, 10 insertions, 11 deletions
diff --git a/2015/rs/code/eight/src/main.rs b/2015/rs/code/eight/src/main.rs
index b51f436..6917a54 100644
--- a/2015/rs/code/eight/src/main.rs
+++ b/2015/rs/code/eight/src/main.rs
@@ -5,7 +5,7 @@ enum ParseState {
   Verbatim,
   Esc,
   Hex1,
-  Hex2(u32)
+  Hex2
 }
 
 fn main() {
@@ -25,8 +25,8 @@ fn main() {
           (ParseState::Esc, 'x') => { state = ParseState::Hex1; },
           (ParseState::Esc, c) => { buf.push(c); state = ParseState::Verbatim; },
 
-          (ParseState::Hex1, c) => { state = ParseState::Hex2(c.to_digit(16).unwrap() * 16); },
-          (ParseState::Hex2(n), c) => { buf.push(/*char::from_u32(n + c.to_digit(16).unwrap()).unwrap()*/'?'); state = ParseState::Verbatim; },
+          (ParseState::Hex1, _) => { state = ParseState::Hex2; },
+          (ParseState::Hex2, _) => { buf.push('?'); state = ParseState::Verbatim; },
         }
       }
       (s, buf)
diff --git a/2015/rs/code/four/src/main.rs b/2015/rs/code/four/src/main.rs
index 177ddc5..0888816 100644
--- a/2015/rs/code/four/src/main.rs
+++ b/2015/rs/code/four/src/main.rs
@@ -9,16 +9,16 @@ fn main() {
   buf.extend_from_slice(INPUT);
 
   for i in 0.. {
-    if i % 1000 == 0 { print!("{i}\r"); std::io::stdout().flush(); }
+    if i % 1000 == 0 { print!("{i}\r"); let _ = std::io::stdout().flush(); }
 
     let mut hasher = Md5::new();
-    write!(&mut buf, "{i}");
+    let _ = write!(&mut buf, "{i}");
     hasher.update(buf.as_slice());
     let hash = hasher.finalize();
     if hash.starts_with(&[0, 0]) && hash[2] < 16 {
       let mut hexhash = String::with_capacity(32);
       for digit in hash {
-        write!(&mut hexhash, "{digit:02x}");
+        let _ = write!(&mut hexhash, "{digit:02x}");
       }
       println!("Got 5 digit hash: {hexhash}, at {i}");
       break;
@@ -27,16 +27,16 @@ fn main() {
   }
 
   for i in 0.. {
-    if i % 1000 == 0 { print!("{i}\r"); std::io::stdout().flush(); }
+    if i % 1000 == 0 { print!("{i}\r"); let _ = std::io::stdout().flush(); }
 
     let mut hasher = Md5::new();
-    write!(&mut buf, "{i}");
+    let _ = write!(&mut buf, "{i}");
     hasher.update(buf.as_slice());
     let hash = hasher.finalize();
     if hash.starts_with(&[0, 0, 0]) {
       let mut hexhash = String::with_capacity(32);
       for digit in hash {
-        write!(&mut hexhash, "{digit:02x}");
+        let _ = write!(&mut hexhash, "{digit:02x}");
       }
       println!("Got 6 digit hash: {hexhash}, at {i}");
       break;
diff --git a/2015/rs/code/nine/src/main.rs b/2015/rs/code/nine/src/main.rs
index 46116e0..408b66a 100644
--- a/2015/rs/code/nine/src/main.rs
+++ b/2015/rs/code/nine/src/main.rs
@@ -1,7 +1,6 @@
 #![feature(iter_next_chunk)]
 
-use std::collections::{HashSet, HashMap};
-use std::io::Write;
+use std::collections::HashMap;
 
 static INPUT: &'static str = include_str!("input.txt");