3 files changed, 9 insertions, 8 deletions
diff --git a/alacritty/src/renderer/mod.rs b/alacritty/src/renderer/mod.rs
index fc586dc9..98e29542 100644
--- a/alacritty/src/renderer/mod.rs
+++ b/alacritty/src/renderer/mod.rs
@@ -3,6 +3,7 @@ use std::ffi::{CStr, CString};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::{fmt, ptr};
 
+use ahash::RandomState;
 use crossfont::Metrics;
 use glutin::context::{ContextApi, GlContext, PossiblyCurrentContext};
 use glutin::display::{GetGlDisplay, GlDisplay};
@@ -290,13 +291,13 @@ impl GlExtensions {
     ///
     /// This function will lazyly load OpenGL extensions.
     fn contains(extension: &str) -> bool {
-        static OPENGL_EXTENSIONS: OnceCell<HashSet<&'static str>> = OnceCell::new();
+        static OPENGL_EXTENSIONS: OnceCell<HashSet<&'static str, RandomState>> = OnceCell::new();
 
         OPENGL_EXTENSIONS.get_or_init(Self::load_extensions).contains(extension)
     }
 
     /// Load available OpenGL extensions.
-    fn load_extensions() -> HashSet<&'static str> {
+    fn load_extensions() -> HashSet<&'static str, RandomState> {
         unsafe {
             let extensions = gl::GetString(gl::EXTENSIONS);
 
@@ -313,7 +314,7 @@ impl GlExtensions {
             } else {
                 match CStr::from_ptr(extensions as *mut _).to_str() {
                     Ok(ext) => ext.split_whitespace().collect(),
-                    Err(_) => HashSet::new(),
+                    Err(_) => Default::default(),
                 }
             }
         }
diff --git a/alacritty/src/renderer/rects.rs b/alacritty/src/renderer/rects.rs
index 8f6204c2..8d7a78e6 100644
--- a/alacritty/src/renderer/rects.rs
+++ b/alacritty/src/renderer/rects.rs
@@ -1,6 +1,7 @@
 use std::collections::HashMap;
 use std::mem;
 
+use ahash::RandomState;
 use crossfont::Metrics;
 
 use alacritty_terminal::grid::Dimensions;
@@ -157,7 +158,7 @@ impl RenderLine {
 /// Lines for underline and strikeout.
 #[derive(Default)]
 pub struct RenderLines {
-    inner: HashMap<Flags, Vec<RenderLine>>,
+    inner: HashMap<Flags, Vec<RenderLine>, RandomState>,
 }
 
 impl RenderLines {
diff --git a/alacritty/src/renderer/text/glyph_cache.rs b/alacritty/src/renderer/text/glyph_cache.rs
index 72415900..a750e4e7 100644
--- a/alacritty/src/renderer/text/glyph_cache.rs
+++ b/alacritty/src/renderer/text/glyph_cache.rs
@@ -1,11 +1,10 @@
 use std::collections::HashMap;
-use std::hash::BuildHasherDefault;
 
+use ahash::RandomState;
 use crossfont::{
     Error as RasterizerError, FontDesc, FontKey, GlyphKey, Metrics, Rasterize, RasterizedGlyph,
     Rasterizer, Size, Slant, Style, Weight,
 };
-use fnv::FnvHasher;
 use log::{error, info};
 use unicode_width::UnicodeWidthChar;
 
@@ -46,7 +45,7 @@ pub struct Glyph {
 /// representations of the same code point.
 pub struct GlyphCache {
     /// Cache of buffered glyphs.
-    cache: HashMap<GlyphKey, Glyph, BuildHasherDefault<FnvHasher>>,
+    cache: HashMap<GlyphKey, Glyph, RandomState>,
 
     /// Rasterizer for loading new glyphs.
     rasterizer: Rasterizer,
@@ -91,7 +90,7 @@ impl GlyphCache {
         let metrics = rasterizer.metrics(regular, font.size())?;
 
         Ok(Self {
-            cache: HashMap::default(),
+            cache: Default::default(),
             rasterizer,
             font_size: font.size(),
             font_key: regular,