diff --git a/crates/builder/src/pages.rs b/crates/builder/src/pages.rs
index b7c65a3e..f6a3f32b 100644
--- a/crates/builder/src/pages.rs
+++ b/crates/builder/src/pages.rs
@@ -8,5 +8,5 @@ use crate::mob::Mob;
 pub(crate) fn all(mobs: Vec<Mob>) -> impl Iterator<Item = FileSpec> {
     [index::page(&mobs), add::page()]
         .into_iter()
-        .chain(mobs.into_iter().map(|m| Mob::page(m)))
+        .chain(mobs.into_iter().map(Mob::page))
 }
diff --git a/nci.nix b/nci.nix
index 33e77cf2..55ec718f 100644
--- a/nci.nix
+++ b/nci.nix
@@ -11,6 +11,7 @@
       nci.projects.default = {
         numtideDevshell = "default";
         path = ./.;
+        drvConfig.env.RUSTFLAGS = "--deny warnings";
       };
 
       devshells.default = {