diff --git a/library/core/tests/lib.rs b/library/core/tests/lib.rs
index 02af3e6f947..13fb97fdc7f 100644
--- a/library/core/tests/lib.rs
+++ b/library/core/tests/lib.rs
@@ -59,6 +59,7 @@
 #![feature(noop_waker)]
 #![feature(numfmt)]
 #![feature(num_midpoint)]
+#![cfg_attr(not(bootstrap), feature(offset_of_nested))]
 #![feature(isqrt)]
 #![feature(step_trait)]
 #![feature(str_internals)]
diff --git a/tests/mir-opt/const_prop/offset_of.rs b/tests/mir-opt/const_prop/offset_of.rs
index 43ecbbed186..f15d15bfcb2 100644
--- a/tests/mir-opt/const_prop/offset_of.rs
+++ b/tests/mir-opt/const_prop/offset_of.rs
@@ -2,7 +2,7 @@
 // unit-test: GVN
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
 
-#![feature(offset_of, offset_of_enum)]
+#![feature(offset_of_enum, offset_of_nested)]
 
 use std::marker::PhantomData;
 use std::mem::offset_of;
diff --git a/tests/mir-opt/dataflow-const-prop/offset_of.rs b/tests/mir-opt/dataflow-const-prop/offset_of.rs
index e71b3f59eca..c1be6910258 100644
--- a/tests/mir-opt/dataflow-const-prop/offset_of.rs
+++ b/tests/mir-opt/dataflow-const-prop/offset_of.rs
@@ -2,7 +2,7 @@
 // unit-test: DataflowConstProp
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
 
-#![feature(offset_of)]
+#![feature(offset_of_nested)]
 
 use std::marker::PhantomData;
 use std::mem::offset_of;
diff --git a/tests/pretty/offset_of.rs b/tests/pretty/offset_of.rs
index e1783432857..1307c335ad3 100644
--- a/tests/pretty/offset_of.rs
+++ b/tests/pretty/offset_of.rs
@@ -1,4 +1,3 @@
 // pp-exact
-#![feature(offset_of)]
 
 fn main() { std::mem::offset_of!(std :: ops :: Range < usize >, end); }
diff --git a/tests/ui/layout/issue-112048-unsizing-niche.rs b/tests/ui/layout/issue-112048-unsizing-niche.rs
index 23588ba36ee..e59e063df99 100644
--- a/tests/ui/layout/issue-112048-unsizing-niche.rs
+++ b/tests/ui/layout/issue-112048-unsizing-niche.rs
@@ -2,7 +2,6 @@
 
 // Check that unsizing does not change which field is considered for niche layout.
 
-#![feature(offset_of)]
 #![allow(dead_code)]
 
 #[derive(Clone)]