diff --git a/compiler/rustc_data_structures/src/sync/lock.rs b/compiler/rustc_data_structures/src/sync/lock.rs
index 2ccf06ccd4f09..a8161c5151156 100644
--- a/compiler/rustc_data_structures/src/sync/lock.rs
+++ b/compiler/rustc_data_structures/src/sync/lock.rs
@@ -1,8 +1,6 @@
 //! This module implements a lock which only uses synchronization if `might_be_dyn_thread_safe` is true.
 //! It implements `DynSend` and `DynSync` instead of the typical `Send` and `Sync` traits.
 
-#![allow(dead_code)]
-
 use std::fmt;
 
 #[derive(Clone, Copy, PartialEq)]
diff --git a/compiler/rustc_data_structures/src/sync/parallel.rs b/compiler/rustc_data_structures/src/sync/parallel.rs
index ab65c7f3a6b5f..e5778428d4712 100644
--- a/compiler/rustc_data_structures/src/sync/parallel.rs
+++ b/compiler/rustc_data_structures/src/sync/parallel.rs
@@ -1,8 +1,6 @@
 //! This module defines parallel operations that are implemented in
 //! one way for the serial compiler, and another way the parallel compiler.
 
-#![allow(dead_code)]
-
 use std::any::Any;
 use std::panic::{AssertUnwindSafe, catch_unwind, resume_unwind};
 
diff --git a/src/bootstrap/src/core/build_steps/setup.rs b/src/bootstrap/src/core/build_steps/setup.rs
index 86b7456d7b4e9..9ce81ff9a229f 100644
--- a/src/bootstrap/src/core/build_steps/setup.rs
+++ b/src/bootstrap/src/core/build_steps/setup.rs
@@ -531,7 +531,7 @@ enum EditorKind {
 
 impl EditorKind {
     // Used in `./tests.rs`.
-    #[allow(dead_code)]
+    #[cfg(test)]
     pub const ALL: &[EditorKind] = &[
         EditorKind::Emacs,
         EditorKind::Helix,
diff --git a/src/bootstrap/src/core/build_steps/tool.rs b/src/bootstrap/src/core/build_steps/tool.rs
index 53a5c6b282fb3..dee4f107ca1a0 100644
--- a/src/bootstrap/src/core/build_steps/tool.rs
+++ b/src/bootstrap/src/core/build_steps/tool.rs
@@ -390,7 +390,6 @@ macro_rules! bootstrap_tool {
         ;
     )+) => {
         #[derive(PartialEq, Eq, Clone)]
-        #[allow(dead_code)]
         pub enum Tool {
             $(
                 $name,