butcher/main: use mimalloc

Cargo.lock

@@ -359,6 +359,7 @@ dependencies = [
  "metrics",
  "metrics-exporter-prometheus",
  "metrics-util",
+ "mimalloc",
  "rand",
  "reqwest",
  "serde",

butcher/Cargo.toml

@@ -20,3 +20,4 @@ texting_robots = "0.2"
 metrics = "0.20"
 metrics-util = "0.14"
 metrics-exporter-prometheus = "0.11"
+mimalloc = { version = "*", default-features = false }

butcher/src/main.rs

@@ -14,6 +14,9 @@ use trend_setter::UpdateSet;
 mod config;
 mod trend_setter;
 
+#[global_allocator]
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
+
 async fn is_profane(profanity: &WordList, post: &Post) -> bool {
     if post.sensitive == Some(true) {
         return true;