From 61c32ccdae66e3dbb70529da05d629a5e378f2c3 Mon Sep 17 00:00:00 2001
From: Ben Siraphob <bensiraphob@gmail.com>
Date: Thu, 3 Sep 2026 22:11:27 -0700
Subject: [PATCH] fastcrw: compile tests in debug mode

---
 pkgs/by-name/fa/fastcrw/package.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/by-name/fa/fastcrw/package.nix b/pkgs/by-name/fa/fastcrw/package.nix
index c66b201f0e0c..9a89651457bb 100644
--- a/pkgs/by-name/fa/fastcrw/package.nix
+++ b/pkgs/by-name/fa/fastcrw/package.nix
@@ -36,6 +36,10 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   cargoTestFlags = [ "--no-fail-fast" ];
 
+  # Optimizing test binaries with fat LTO takes over 100 minutes on Hydra,
+  # while the tests themselves finish in about two minutes.
+  checkType = "debug";
+
   checkFlags = [
     # Dials a blackhole address to assert the error is a connect-phase timeout;
     # the sandbox has no route at all, so it fails fast as "network unreachable".