diff --git a/cc/afdo_test.go b/cc/afdo_test.go
index fe3392a..8edf729 100644
--- a/cc/afdo_test.go
+++ b/cc/afdo_test.go
@@ -38,6 +38,7 @@
 }
 
 func TestAfdoDeps(t *testing.T) {
+	t.Parallel()
 	bp := `
 	cc_library_shared {
 		name: "libTest",
@@ -93,6 +94,7 @@
 }
 
 func TestAfdoEnabledOnStaticDepNoAfdo(t *testing.T) {
+	t.Parallel()
 	bp := `
 	cc_library_shared {
 		name: "libTest",
diff --git a/cc/binary_test.go b/cc/binary_test.go
index db6fb3a..43aff5c 100644
--- a/cc/binary_test.go
+++ b/cc/binary_test.go
@@ -22,6 +22,7 @@
 )
 
 func TestCcBinaryWithBazel(t *testing.T) {
+	t.Parallel()
 	bp := `
 cc_binary {
 	name: "foo",
@@ -55,6 +56,7 @@
 }
 
 func TestBinaryLinkerScripts(t *testing.T) {
+	t.Parallel()
 	result := PrepareForIntegrationTestWithCc.RunTestWithBp(t, `
 		cc_binary {
 			name: "foo",
diff --git a/cc/cc_test.go b/cc/cc_test.go
index 6a22bd0..6dfd395 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -154,6 +154,7 @@
 }
 
 func TestVendorSrc(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library {
 			name: "libTest",
@@ -220,6 +221,7 @@
 }
 
 func TestInstallPartition(t *testing.T) {
+	t.Parallel()
 	t.Helper()
 	ctx := prepareForCcTest.RunTestWithBp(t, `
 		cc_library {
@@ -352,6 +354,7 @@
 }
 
 func TestVndk(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libvndk",
@@ -569,6 +572,7 @@
 }
 
 func TestVndkWithHostSupported(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library {
 			name: "libvndk_host_supported",
@@ -605,6 +609,7 @@
 }
 
 func TestVndkLibrariesTxtAndroidMk(t *testing.T) {
+	t.Parallel()
 	bp := `
 		llndk_libraries_txt {
 			name: "llndk.libraries.txt",
@@ -621,6 +626,7 @@
 }
 
 func TestVndkUsingCoreVariant(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libvndk",
@@ -673,6 +679,7 @@
 }
 
 func TestDataLibs(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_test_library {
 			name: "test_lib",
@@ -723,6 +730,7 @@
 }
 
 func TestDataLibsRelativeInstallPath(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_test_library {
 			name: "test_lib",
@@ -781,6 +789,7 @@
 }
 
 func TestTestBinaryTestSuites(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_test {
 			name: "main_test",
@@ -812,6 +821,7 @@
 }
 
 func TestTestLibraryTestSuites(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_test_library {
 			name: "main_test_lib",
@@ -843,6 +853,7 @@
 }
 
 func TestVndkWhenVndkVersionIsNotSet(t *testing.T) {
+	t.Parallel()
 	ctx := testCcNoVndk(t, `
 		cc_library {
 			name: "libvndk",
@@ -899,6 +910,7 @@
 }
 
 func TestVndkModuleError(t *testing.T) {
+	t.Parallel()
 	// Check the error message for vendor_available and product_available properties.
 	testCcErrorProductVndk(t, "vndk: vendor_available must be set to true when `vndk: {enabled: true}`", `
 		cc_library {
@@ -940,6 +952,7 @@
 }
 
 func TestVndkDepError(t *testing.T) {
+	t.Parallel()
 	// Check whether an error is emitted when a VNDK lib depends on a system lib.
 	testCcError(t, "dependency \".*\" of \".*\" missing variant", `
 		cc_library {
@@ -1131,6 +1144,7 @@
 }
 
 func TestDoubleLoadbleDep(t *testing.T) {
+	t.Parallel()
 	// okay to link : LLNDK -> double_loadable VNDK
 	testCc(t, `
 		cc_library {
@@ -1235,6 +1249,7 @@
 }
 
 func TestDoubleLoadableDepError(t *testing.T) {
+	t.Parallel()
 	// Check whether an error is emitted when a LLNDK depends on a non-double_loadable VNDK lib.
 	testCcError(t, "module \".*\" variant \".*\": link.* \".*\" which is not LL-NDK, VNDK-SP, .*double_loadable", `
 		cc_library {
@@ -1317,6 +1332,7 @@
 }
 
 func TestCheckVndkMembershipBeforeDoubleLoadable(t *testing.T) {
+	t.Parallel()
 	testCcError(t, "module \"libvndksp\" variant .*: .*: VNDK-SP must only depend on VNDK-SP", `
 		cc_library {
 			name: "libvndksp",
@@ -1342,6 +1358,7 @@
 }
 
 func TestVndkExt(t *testing.T) {
+	t.Parallel()
 	// This test checks the VNDK-Ext properties.
 	bp := `
 		cc_library {
@@ -1429,6 +1446,7 @@
 }
 
 func TestVndkExtWithoutBoardVndkVersion(t *testing.T) {
+	t.Parallel()
 	// This test checks the VNDK-Ext properties when BOARD_VNDK_VERSION is not set.
 	ctx := testCcNoVndk(t, `
 		cc_library {
@@ -1460,6 +1478,7 @@
 }
 
 func TestVndkExtWithoutProductVndkVersion(t *testing.T) {
+	t.Parallel()
 	// This test checks the VNDK-Ext properties when PRODUCT_PRODUCT_VNDK_VERSION is not set.
 	ctx := testCcNoProductVndk(t, `
 		cc_library {
@@ -1491,6 +1510,7 @@
 }
 
 func TestVndkExtError(t *testing.T) {
+	t.Parallel()
 	// This test ensures an error is emitted in ill-formed vndk-ext definition.
 	testCcError(t, "must set `vendor: true` or `product_specific: true` to set `extends: \".*\"`", `
 		cc_library {
@@ -1581,6 +1601,7 @@
 }
 
 func TestVndkExtInconsistentSupportSystemProcessError(t *testing.T) {
+	t.Parallel()
 	// This test ensures an error is emitted for inconsistent support_system_process.
 	testCcError(t, "module \".*\" with mismatched support_system_process", `
 		cc_library {
@@ -1630,6 +1651,7 @@
 }
 
 func TestVndkExtVendorAvailableFalseError(t *testing.T) {
+	t.Parallel()
 	// This test ensures an error is emitted when a VNDK-Ext library extends a VNDK library
 	// with `private: true`.
 	testCcError(t, "`extends` refers module \".*\" which has `private: true`", `
@@ -1680,6 +1702,7 @@
 }
 
 func TestVendorModuleUseVndkExt(t *testing.T) {
+	t.Parallel()
 	// This test ensures a vendor module can depend on a VNDK-Ext library.
 	testCc(t, `
 		cc_library {
@@ -1734,6 +1757,7 @@
 }
 
 func TestVndkExtUseVendorLib(t *testing.T) {
+	t.Parallel()
 	// This test ensures a VNDK-Ext library can depend on a vendor library.
 	testCc(t, `
 		cc_library {
@@ -1798,6 +1822,7 @@
 }
 
 func TestProductVndkExtDependency(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libvndk",
@@ -1865,6 +1890,7 @@
 }
 
 func TestVndkSpExtUseVndkError(t *testing.T) {
+	t.Parallel()
 	// This test ensures an error is emitted if a VNDK-SP-Ext library depends on a VNDK
 	// library.
 	testCcError(t, "module \".*\" variant \".*\": \\(.*\\) should not link to \".*\"", `
@@ -1951,6 +1977,7 @@
 }
 
 func TestVndkUseVndkExtError(t *testing.T) {
+	t.Parallel()
 	// This test ensures an error is emitted if a VNDK/VNDK-SP library depends on a
 	// VNDK-Ext/VNDK-SP-Ext library.
 	testCcError(t, "dependency \".*\" of \".*\" missing variant", `
@@ -2096,6 +2123,7 @@
 }
 
 func TestEnforceProductVndkVersion(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libllndk",
@@ -2221,6 +2249,7 @@
 }
 
 func TestEnforceProductVndkVersionErrors(t *testing.T) {
+	t.Parallel()
 	testCcErrorProductVndk(t, "dependency \".*\" of \".*\" missing variant:\n.*image:product.29", `
 		cc_library {
 			name: "libprod",
@@ -2318,6 +2347,7 @@
 }
 
 func TestMakeLinkType(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libvndk",
@@ -2609,6 +2639,7 @@
 }
 
 func TestStaticLibDepReordering(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 	cc_library {
 		name: "a",
@@ -2648,6 +2679,7 @@
 }
 
 func TestStaticLibDepReorderingWithShared(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 	cc_library {
 		name: "a",
@@ -2695,6 +2727,7 @@
 }
 
 func TestLlndkLibrary(t *testing.T) {
+	t.Parallel()
 	result := prepareForCcTest.RunTestWithBp(t, `
 	cc_library {
 		name: "libllndk",
@@ -2782,6 +2815,7 @@
 }
 
 func TestLlndkHeaders(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 	cc_library_headers {
 		name: "libllndk_headers",
@@ -2914,6 +2948,7 @@
 `
 
 func TestRuntimeLibs(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, runtimeLibAndroidBp)
 
 	// runtime_libs for core variants use the module names without suffixes.
@@ -2950,6 +2985,7 @@
 }
 
 func TestExcludeRuntimeLibs(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, runtimeLibAndroidBp)
 
 	variant := "android_arm64_armv8-a_shared"
@@ -2962,6 +2998,7 @@
 }
 
 func TestRuntimeLibsNoVndk(t *testing.T) {
+	t.Parallel()
 	ctx := testCcNoVndk(t, runtimeLibAndroidBp)
 
 	// If DeviceVndkVersion is not defined, then runtime_libs are copied as-is.
@@ -3002,6 +3039,7 @@
 `
 
 func TestStaticLibDepExport(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, staticLibAndroidBp)
 
 	// Check the shared version of lib2.
@@ -3089,6 +3127,7 @@
 }
 
 func TestCompilerFlags(t *testing.T) {
+	t.Parallel()
 	for _, testCase := range compilerFlagsTestCases {
 		ctx := &mockContext{result: true}
 		CheckBadCompilerFlags(ctx, "", []string{testCase.in})
@@ -3102,6 +3141,7 @@
 }
 
 func TestRecovery(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library_shared {
 			name: "librecovery",
@@ -3137,6 +3177,7 @@
 }
 
 func TestDataLibsPrebuiltSharedTestLibrary(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_prebuilt_test_library_shared {
 			name: "test_lib",
@@ -3183,6 +3224,7 @@
 }
 
 func TestVersionedStubs(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library_shared {
 			name: "libFoo",
@@ -3249,6 +3291,7 @@
 }
 
 func TestVersioningMacro(t *testing.T) {
+	t.Parallel()
 	for _, tc := range []struct{ moduleName, expected string }{
 		{"libc", "__LIBC_API__"},
 		{"libfoo", "__LIBFOO_API__"},
@@ -3269,6 +3312,7 @@
 }
 
 func TestStaticLibArchiveArgs(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library_static {
 			name: "foo",
@@ -3309,6 +3353,7 @@
 }
 
 func TestSharedLibLinkingArgs(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library_static {
 			name: "foo",
@@ -3357,6 +3402,7 @@
 }
 
 func TestStaticExecutable(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_binary {
 			name: "static_test",
@@ -3382,6 +3428,7 @@
 }
 
 func TestStaticDepsOrderWithStubs(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_binary {
 			name: "mybin",
@@ -3422,6 +3469,7 @@
 }
 
 func TestErrorsIfAModuleDependsOnDisabled(t *testing.T) {
+	t.Parallel()
 	testCcError(t, `module "libA" .* depends on disabled module "libB"`, `
 		cc_library {
 			name: "libA",
@@ -3549,10 +3597,12 @@
 }
 
 func TestAFLFuzzTargetForDevice(t *testing.T) {
+	t.Parallel()
 	VerifyAFLFuzzTargetVariant(t, "android_arm64_armv8-a")
 }
 
 func TestAFLFuzzTargetForLinuxHost(t *testing.T) {
+	t.Parallel()
 	if runtime.GOOS != "linux" {
 		t.Skip("requires linux")
 	}
@@ -3563,6 +3613,7 @@
 // Simple smoke test for the cc_fuzz target that ensures the rule compiles
 // correctly.
 func TestFuzzTarget(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_fuzz {
 			name: "fuzz_smoke_test",
@@ -3573,9 +3624,6 @@
 	ctx.ModuleForTests("fuzz_smoke_test", variant).Rule("cc")
 }
 
-func TestAidl(t *testing.T) {
-}
-
 func assertString(t *testing.T, got, expected string) {
 	t.Helper()
 	if got != expected {
@@ -3604,6 +3652,7 @@
 }
 
 func TestDefaults(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_defaults {
 			name: "defaults",
@@ -3663,6 +3712,7 @@
 }
 
 func TestProductVariableDefaults(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_defaults {
 			name: "libfoo_defaults",
@@ -3724,6 +3774,7 @@
 }
 
 func TestInstallSharedLibs(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_binary {
 			name: "bin",
@@ -3819,6 +3870,7 @@
 }
 
 func TestStubsLibReexportsHeaders(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library_shared {
 			name: "libclient",
@@ -3851,6 +3903,7 @@
 }
 
 func TestAidlFlagsPassedToTheAidlCompiler(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library {
 			name: "libfoo",
@@ -3869,6 +3922,7 @@
 }
 
 func TestAidlFlagsWithMinSdkVersion(t *testing.T) {
+	t.Parallel()
 	for _, tc := range []struct {
 		name       string
 		sdkVersion string
@@ -3921,6 +3975,7 @@
 }
 
 func TestMinSdkVersionInClangTriple(t *testing.T) {
+	t.Parallel()
 	ctx := testCc(t, `
 		cc_library_shared {
 			name: "libfoo",
@@ -3933,6 +3988,7 @@
 }
 
 func TestNonDigitMinSdkVersionInClangTriple(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library_shared {
 			name: "libfoo",
@@ -3952,6 +4008,7 @@
 }
 
 func TestIncludeDirsExporting(t *testing.T) {
+	t.Parallel()
 
 	// Trim spaces from the beginning, end and immediately after any newline characters. Leaves
 	// embedded newline characters alone.
@@ -4223,6 +4280,7 @@
 }
 
 func TestIncludeDirectoryOrdering(t *testing.T) {
+	t.Parallel()
 	baseExpectedFlags := []string{
 		"${config.ArmThumbCflags}",
 		"${config.ArmCflags}",
@@ -4426,6 +4484,7 @@
 }
 
 func TestCcBuildBrokenClangProperty(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name                     string
 		clang                    bool
@@ -4476,6 +4535,7 @@
 }
 
 func TestCcBuildBrokenClangAsFlags(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name                    string
 		clangAsFlags            []string
@@ -4521,6 +4581,7 @@
 }
 
 func TestCcBuildBrokenClangCFlags(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name                   string
 		clangCFlags            []string
diff --git a/cc/library_headers_test.go b/cc/library_headers_test.go
index 3e448ba..1924b2f 100644
--- a/cc/library_headers_test.go
+++ b/cc/library_headers_test.go
@@ -59,6 +59,7 @@
 }
 
 func TestPrebuiltLibraryHeadersPreferred(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library_headers {
 			name: "headers",
diff --git a/cc/library_test.go b/cc/library_test.go
index 2bc9967..dab5bb8 100644
--- a/cc/library_test.go
+++ b/cc/library_test.go
@@ -23,6 +23,7 @@
 )
 
 func TestLibraryReuse(t *testing.T) {
+	t.Parallel()
 	t.Run("simple", func(t *testing.T) {
 		ctx := testCc(t, `
 		cc_library {
@@ -191,6 +192,7 @@
 }
 
 func TestStubsVersions(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libfoo",
@@ -214,6 +216,7 @@
 }
 
 func TestStubsVersions_NotSorted(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libfoo",
@@ -229,6 +232,7 @@
 }
 
 func TestStubsVersions_ParseError(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_library {
 			name: "libfoo",
@@ -243,6 +247,7 @@
 }
 
 func TestCcLibraryWithBazel(t *testing.T) {
+	t.Parallel()
 	bp := `
 cc_library {
 	name: "foo",
@@ -304,6 +309,7 @@
 }
 
 func TestLibraryVersionScript(t *testing.T) {
+	t.Parallel()
 	result := PrepareForIntegrationTestWithCc.RunTestWithBp(t, `
 		cc_library {
 			name: "libfoo",
@@ -321,6 +327,7 @@
 }
 
 func TestLibraryDynamicList(t *testing.T) {
+	t.Parallel()
 	result := PrepareForIntegrationTestWithCc.RunTestWithBp(t, `
 		cc_library {
 			name: "libfoo",
@@ -338,6 +345,7 @@
 }
 
 func TestCcLibrarySharedWithBazel(t *testing.T) {
+	t.Parallel()
 	bp := `
 cc_library_shared {
 	name: "foo",
@@ -383,6 +391,7 @@
 }
 
 func TestWholeStaticLibPrebuilts(t *testing.T) {
+	t.Parallel()
 	result := PrepareForIntegrationTestWithCc.RunTestWithBp(t, `
 		cc_prebuilt_library_static {
 			name: "libprebuilt",
diff --git a/cc/lto_test.go b/cc/lto_test.go
index afd2c77..fbd91be 100644
--- a/cc/lto_test.go
+++ b/cc/lto_test.go
@@ -23,6 +23,7 @@
 )
 
 func TestThinLtoDeps(t *testing.T) {
+	t.Parallel()
 	bp := `
 	cc_library_shared {
 		name: "lto_enabled",
@@ -106,6 +107,7 @@
 }
 
 func TestThinLtoOnlyOnStaticDep(t *testing.T) {
+	t.Parallel()
 	bp := `
 	cc_library_shared {
 		name: "root",
diff --git a/cc/sanitize_test.go b/cc/sanitize_test.go
index b102d33..f084c76 100644
--- a/cc/sanitize_test.go
+++ b/cc/sanitize_test.go
@@ -86,6 +86,7 @@
 }
 
 func TestAsan(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_binary {
 			name: "bin_with_asan",
@@ -233,6 +234,7 @@
 }
 
 func TestTsan(t *testing.T) {
+	t.Parallel()
 	bp := `
 	cc_binary {
 		name: "bin_with_tsan",
@@ -318,6 +320,7 @@
 		t.Skip("requires linux")
 	}
 
+	t.Parallel()
 	bp := `
 	cc_binary {
 		name: "bin_with_ubsan",
@@ -417,6 +420,7 @@
 }
 
 func TestFuzz(t *testing.T) {
+	t.Parallel()
 	bp := `
 		cc_binary {
 			name: "bin_with_fuzzer",
@@ -551,6 +555,7 @@
 }
 
 func TestUbsan(t *testing.T) {
+	t.Parallel()
 	if runtime.GOOS != "linux" {
 		t.Skip("requires linux")
 	}
@@ -794,6 +799,7 @@
 )
 
 func TestSanitizeMemtagHeap(t *testing.T) {
+	t.Parallel()
 	variant := "android_arm64_armv8-a"
 
 	result := android.GroupFixturePreparers(
@@ -866,6 +872,7 @@
 }
 
 func TestSanitizeMemtagHeapWithSanitizeDevice(t *testing.T) {
+	t.Parallel()
 	variant := "android_arm64_armv8-a"
 
 	result := android.GroupFixturePreparers(
@@ -940,6 +947,7 @@
 }
 
 func TestSanitizeMemtagHeapWithSanitizeDeviceDiag(t *testing.T) {
+	t.Parallel()
 	variant := "android_arm64_armv8-a"
 
 	result := android.GroupFixturePreparers(