diff --git a/src/cargo/core/compiler/mod.rs b/src/cargo/core/compiler/mod.rs
index 014a2781c79..77dc6089fb5 100644
--- a/src/cargo/core/compiler/mod.rs
+++ b/src/cargo/core/compiler/mod.rs
@@ -802,6 +802,7 @@ fn prepare_rustc(build_runner: &BuildRunner<'_, '_>, unit: &Unit) -> CargoResult
             );
         }
         base.arg("-Z").arg("crate-attr=feature(frontmatter)");
+        base.arg("-Z").arg("crate-attr=allow(unused_features)");
     }
 
     base.inherit_jobserver(&build_runner.jobserver);
@@ -857,6 +858,7 @@ fn prepare_rustdoc(build_runner: &BuildRunner<'_, '_>, unit: &Unit) -> CargoResu
             );
         }
         rustdoc.arg("-Z").arg("crate-attr=feature(frontmatter)");
+        rustdoc.arg("-Z").arg("crate-attr=allow(unused_features)");
     }
     rustdoc.inherit_jobserver(&build_runner.jobserver);
     let crate_name = unit.target.crate_name();
diff --git a/tests/testsuite/git.rs b/tests/testsuite/git.rs
index 82ef654c213..43698039533 100644
--- a/tests/testsuite/git.rs
+++ b/tests/testsuite/git.rs
@@ -3509,7 +3509,8 @@ fn two_dep_forms() {
     // the two local deps.
     project
         .cargo("check")
-        .with_stderr_data(str![[r#"
+        .with_stderr_data(
+            str![[r#"
 [UPDATING] git repository `[ROOTURL]/dep1`
 [UPDATING] git repository `[ROOTURL]/dep1`
 [LOCKING] 3 packages to latest compatible versions
@@ -3519,7 +3520,9 @@ fn two_dep_forms() {
 [CHECKING] foo v0.5.0 ([ROOT]/foo)
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
 
-"#]])
+"#]]
+            .unordered(),
+        )
         .run();
 }
 
diff --git a/tests/testsuite/replace.rs b/tests/testsuite/replace.rs
index 80c617bf6a8..4c62e598da2 100644
--- a/tests/testsuite/replace.rs
+++ b/tests/testsuite/replace.rs
@@ -469,7 +469,8 @@ fn use_a_spec_to_select() {
         .build();
 
     p.cargo("check")
-        .with_stderr_data(str![[r#"
+        .with_stderr_data(
+            str![[r#"
 [UPDATING] `dummy-registry` index
 [UPDATING] git repository `[ROOTURL]/override`
 [LOCKING] 4 packages to latest compatible versions
@@ -483,7 +484,9 @@ fn use_a_spec_to_select() {
 [CHECKING] foo v0.0.1 ([ROOT]/foo)
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
 
-"#]])
+"#]]
+            .unordered(),
+        )
         .run();
 }