diff --git a/compiler/rustc_data_structures/src/sync.rs b/compiler/rustc_data_structures/src/sync.rs
index bea87a6685d8..779127ce32f7 100644
--- a/compiler/rustc_data_structures/src/sync.rs
+++ b/compiler/rustc_data_structures/src/sync.rs
@@ -203,12 +203,6 @@ pub fn read(&self) -> ReadGuard<'_, T> {
         }
     }
 
-    #[inline(always)]
-    #[track_caller]
-    pub fn with_read_lock<F: FnOnce(&T) -> R, R>(&self, f: F) -> R {
-        f(&*self.read())
-    }
-
     #[inline(always)]
     pub fn try_write(&self) -> Result<WriteGuard<'_, T>, ()> {
         self.0.try_write().ok_or(())
@@ -223,12 +217,6 @@ pub fn write(&self) -> WriteGuard<'_, T> {
         }
     }
 
-    #[inline(always)]
-    #[track_caller]
-    pub fn with_write_lock<F: FnOnce(&mut T) -> R, R>(&self, f: F) -> R {
-        f(&mut *self.write())
-    }
-
     #[inline(always)]
     #[track_caller]
     pub fn borrow(&self) -> ReadGuard<'_, T> {
@@ -240,14 +228,6 @@ pub fn borrow(&self) -> ReadGuard<'_, T> {
     pub fn borrow_mut(&self) -> WriteGuard<'_, T> {
         self.write()
     }
-
-    #[inline(always)]
-    pub fn leak(&self) -> &T {
-        let guard = self.read();
-        let ret = unsafe { &*(&raw const *guard) };
-        std::mem::forget(guard);
-        ret
-    }
 }
 
 // FIXME: Probably a bad idea