diff --git a/library/core/src/convert/mod.rs b/library/core/src/convert/mod.rs
index 45f6e375e89..85740dce866 100644
--- a/library/core/src/convert/mod.rs
+++ b/library/core/src/convert/mod.rs
@@ -396,6 +396,7 @@ pub trait AsMut<T: ?Sized> {
 /// For example, take this code:
 ///
 /// ```
+/// # #![cfg_attr(not(bootstrap), allow(non_local_definitions))]
 /// struct Wrapper<T>(Vec<T>);
 /// impl<T> From<Wrapper<T>> for Vec<T> {
 ///     fn from(w: Wrapper<T>) -> Vec<T> {
diff --git a/library/core/src/hash/mod.rs b/library/core/src/hash/mod.rs
index 153971a59c5..bfdd28a7399 100644
--- a/library/core/src/hash/mod.rs
+++ b/library/core/src/hash/mod.rs
@@ -454,6 +454,7 @@ pub trait Hasher {
     /// ```
     /// #![feature(hasher_prefixfree_extras)]
     /// # // Stubs to make the `impl` below pass the compiler
+    /// # #![cfg_attr(not(bootstrap), allow(non_local_definitions))]
     /// # struct MyCollection<T>(Option<T>);
     /// # impl<T> MyCollection<T> {
     /// #     fn len(&self) -> usize { todo!() }
diff --git a/library/core/tests/iter/adapters/step_by.rs b/library/core/tests/iter/adapters/step_by.rs
index b4d61d28cb2..29adf0b42fa 100644
--- a/library/core/tests/iter/adapters/step_by.rs
+++ b/library/core/tests/iter/adapters/step_by.rs
@@ -49,6 +49,7 @@ fn test_iterator_step_by_nth() {
 }
 
 #[test]
+#[cfg_attr(not(bootstrap), allow(non_local_definitions))]
 fn test_iterator_step_by_nth_overflow() {
     #[cfg(target_pointer_width = "16")]
     type Bigger = u32;
diff --git a/library/core/tests/result.rs b/library/core/tests/result.rs
index 6c008ab2cb1..d02dc45da34 100644
--- a/library/core/tests/result.rs
+++ b/library/core/tests/result.rs
@@ -195,6 +195,7 @@ pub fn test_unwrap_or_default() {
 }
 
 #[test]
+#[cfg_attr(not(bootstrap), allow(non_local_definitions))]
 pub fn test_into_ok() {
     fn infallible_op() -> Result<isize, !> {
         Ok(666)
@@ -217,6 +218,7 @@ pub fn test_into_ok() {
 }
 
 #[test]
+#[cfg_attr(not(bootstrap), allow(non_local_definitions))]
 pub fn test_into_err() {
     fn until_error_op() -> Result<!, isize> {
         Err(666)