diff --git a/cli/bench/main.rs b/cli/bench/main.rs
index e69727013c..1d1ff5fbde 100644
--- a/cli/bench/main.rs
+++ b/cli/bench/main.rs
@@ -120,6 +120,7 @@ const EXEC_TIME_BENCHMARKS: &[(&str, &[&str], Option<i32>)] = &[
     &[
       "cache",
       "--reload",
+      "--unstable",
       "test_util/std/examples/chat/server_test.ts",
     ],
     None,
@@ -130,13 +131,18 @@ const EXEC_TIME_BENCHMARKS: &[(&str, &[&str], Option<i32>)] = &[
       "cache",
       "--reload",
       "--no-check",
+      "--unstable",
       "test_util/std/examples/chat/server_test.ts",
     ],
     None,
   ),
   (
     "bundle",
-    &["bundle", "test_util/std/examples/chat/server_test.ts"],
+    &[
+      "bundle",
+      "--unstable",
+      "test_util/std/examples/chat/server_test.ts",
+    ],
     None,
   ),
   (
@@ -144,6 +150,7 @@ const EXEC_TIME_BENCHMARKS: &[(&str, &[&str], Option<i32>)] = &[
     &[
       "bundle",
       "--no-check",
+      "--unstable",
       "test_util/std/examples/chat/server_test.ts",
     ],
     None,
diff --git a/cli/tests/unit/console_test.ts b/cli/tests/unit/console_test.ts
index 4601281ffb..d349266e8b 100644
--- a/cli/tests/unit/console_test.ts
+++ b/cli/tests/unit/console_test.ts
@@ -52,7 +52,7 @@ function parseCss(cssString: string): Css {
   return parseCss_(cssString);
 }
 
-function parseCssColor(colorString: string): Css {
+function parseCssColor(colorString: string): [number, number, number] | null {
   return parseCssColor_(colorString);
 }
 
diff --git a/cli/tests/unit/rename_test.ts b/cli/tests/unit/rename_test.ts
index 6d200e9c51..cf458f44de 100644
--- a/cli/tests/unit/rename_test.ts
+++ b/cli/tests/unit/rename_test.ts
@@ -167,7 +167,7 @@ Deno.test(
       () => {
         Deno.renameSync(olddir, file);
       },
-      undefined,
+      Error,
       `rename '${olddir}' -> '${file}'`,
     );
 
@@ -252,7 +252,7 @@ Deno.test(
       () => {
         Deno.renameSync(olddir, emptydir);
       },
-      undefined,
+      Error,
       `rename '${olddir}' -> '${emptydir}'`,
     );
 
diff --git a/cli/tests/unit/spawn_test.ts b/cli/tests/unit/spawn_test.ts
index 40224dfb42..64ba2519b1 100644
--- a/cli/tests/unit/spawn_test.ts
+++ b/cli/tests/unit/spawn_test.ts
@@ -358,8 +358,8 @@ Deno.test(
   },
 );
 
-Deno.test({ permissions: { run: true } }, async function spawnNotFound() {
-  await assertRejects(
+Deno.test({ permissions: { run: true } }, function spawnNotFound() {
+  assertThrows(
     () => Deno.spawn("this file hopefully doesn't exist"),
     Deno.errors.NotFound,
   );
@@ -672,8 +672,8 @@ Deno.test(
   },
 );
 
-Deno.test(async function spawnStdinPipedFails() {
-  await assertRejects(
+Deno.test(function spawnStdinPipedFails() {
+  assertThrows(
     () =>
       Deno.spawn("id", {
         stdin: "piped",
diff --git a/test_util/std b/test_util/std
index 6069bfe413..852968f631 160000
--- a/test_util/std
+++ b/test_util/std
@@ -1 +1 @@
-Subproject commit 6069bfe4137864214daf43637069fa533f04ba82
+Subproject commit 852968f631b09f6df4a3b0ac6169ba3436d75fc5