2 files changed, 3 insertions, 2 deletions
diff --git a/alacritty_terminal/src/ansi.rs b/alacritty_terminal/src/ansi.rs
index f4e8fde1..b590bd7d 100644
--- a/alacritty_terminal/src/ansi.rs
+++ b/alacritty_terminal/src/ansi.rs
@@ -1,6 +1,7 @@
 //! ANSI Terminal Stream Parsing.
 
 use std::convert::TryFrom;
+use std::fmt::Write;
 use std::time::{Duration, Instant};
 use std::{iter, str};
 
@@ -950,7 +951,7 @@ where
             for items in params {
                 buf.push('[');
                 for item in *items {
-                    buf.push_str(&format!("{:?},", *item as char));
+                    let _ = write!(buf, "{:?}", *item as char);
                 }
                 buf.push_str("],");
             }
diff --git a/alacritty_terminal/src/grid/storage.rs b/alacritty_terminal/src/grid/storage.rs
index 0b36fef6..6fbc3bf2 100644
--- a/alacritty_terminal/src/grid/storage.rs
+++ b/alacritty_terminal/src/grid/storage.rs
@@ -175,7 +175,7 @@ impl<T> Storage<T> {
     /// Rotate the grid, moving all lines up/down in history.
     #[inline]
     pub fn rotate(&mut self, count: isize) {
-        debug_assert!(count.abs() as usize <= self.inner.len());
+        debug_assert!(count.unsigned_abs() <= self.inner.len());
 
         let len = self.inner.len();
         self.zero = (self.zero as isize + count + len as isize) as usize % len;