Use MiMalloc in milli tests

Cargo.lock

@@ -2645,6 +2645,7 @@ dependencies = [
  "maplit",
  "md5",
  "memmap2",
+ "mimalloc",
  "obkv",
  "once_cell",
  "ordered-float",

milli/Cargo.toml

@@ -58,6 +58,7 @@ logging_timer = "1.1.0"
 csv = "1.1.6"
 
 [dev-dependencies]
+mimalloc = { version = "0.1.29", default-features = false }
 big_s = "1.0.2"
 insta = "1.21.0"
 maplit = "1.0.2"

milli/src/lib.rs

@@ -1,7 +1,15 @@
 #![cfg_attr(all(test, fuzzing), feature(no_coverage))]
+#![allow(unused, clippy::type_complexity)]
+
+#[cfg(test)]
+#[global_allocator]
+static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
+
 #[macro_use]
 pub mod documents;
 
+pub use search::new;
+
 mod asc_desc;
 mod criterion;
 mod error;