Bump runner to dotnet 9.

.devcontainer/devcontainer.json

@@ -1,10 +1,10 @@
 {
   "name": "Actions Runner Devcontainer",
-  "image": "mcr.microsoft.com/devcontainers/base:focal",
+  "image": "mcr.microsoft.com/devcontainers/base:noble",
   "features": {
     "ghcr.io/devcontainers/features/docker-in-docker:1": {},
     "ghcr.io/devcontainers/features/dotnet": {
-      "version": "8.0.404"
+      "version": "9.0.100"
     },
     "ghcr.io/devcontainers/features/node:1": {
       "version": "20"

docs/checks/sslcert.md

@@ -41,7 +41,7 @@ To let the runner trusts your CA certificate, you will need to:
     - macOS: ![trust ca cert](./../res/macOStrustCA.gif)
     - Linux: Refer to the distribution documentation
       1. RedHat: https://www.redhat.com/sysadmin/ca-certificates-cli
-      2. Ubuntu: http://manpages.ubuntu.com/manpages/focal/man8/update-ca-certificates.8.html
+      2. Ubuntu: https://manpages.ubuntu.com/manpages/noble/man8/update-ca-certificates.8.html
       3. Google search: "trust ca certificate on [linux distribution]"
       4. If all approaches failed, set environment variable `SSL_CERT_FILE` to the CA bundle `.pem` file we get.
     > To verify cert gets installed properly on Linux, you can try use `curl -v https://sitewithsslissue.com` and `pwsh -Command \"Invoke-WebRequest -Uri https://sitewithsslissue.com\"`

images/Dockerfile

@@ -1,5 +1,5 @@
 # Source: https://github.com/dotnet/dotnet-docker
-FROM mcr.microsoft.com/dotnet/runtime-deps:8.0-jammy as build
+FROM mcr.microsoft.com/dotnet/runtime-deps:9.0-noble as build
 
 ARG TARGETOS
 ARG TARGETARCH
@@ -32,7 +32,7 @@ RUN export RUNNER_ARCH=${TARGETARCH} \
         "https://github.com/docker/buildx/releases/download/v${BUILDX_VERSION}/buildx-v${BUILDX_VERSION}.linux-${TARGETARCH}" \
     && chmod +x /usr/local/lib/docker/cli-plugins/docker-buildx
 
-FROM mcr.microsoft.com/dotnet/runtime-deps:8.0-jammy
+FROM mcr.microsoft.com/dotnet/runtime-deps:9.0-noble
 
 ENV DEBIAN_FRONTEND=noninteractive
 ENV RUNNER_MANUALLY_TRAP_SIG=1

src/Runner.Common/Runner.Common.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <OutputType>Library</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
@@ -17,9 +17,9 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="8.0.0" />
-    <PackageReference Include="System.Text.Encoding.CodePages" Version="8.0.0" />
-    <PackageReference Include="System.Threading.Channels" Version="8.0.0" />
+    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="9.0.0" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="9.0.0" />
+    <PackageReference Include="System.Threading.Channels" Version="9.0.0" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">

src/Runner.Listener/Runner.Listener.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
     <SelfContained>true</SelfContained>
@@ -22,8 +22,8 @@
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="System.IO.FileSystem.AccessControl" Version="5.0.0" />
-    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="8.0.0" />
-    <PackageReference Include="System.ServiceProcess.ServiceController" Version="8.0.0" />
+    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="9.0.0" />
+    <PackageReference Include="System.ServiceProcess.ServiceController" Version="9.0.0" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">

src/Runner.PluginHost/Runner.PluginHost.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
     <SelfContained>true</SelfContained>

src/Runner.Plugins/Runner.Plugins.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <OutputType>Library</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
     <SelfContained>true</SelfContained>

src/Runner.Sdk/Runner.Sdk.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <OutputType>Library</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
     <SelfContained>true</SelfContained>
@@ -15,9 +15,9 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Text.Encoding.CodePages" Version="8.0.0" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="9.0.0" />
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
-    <PackageReference Include="System.Threading.Channels" Version="8.0.0" />
+    <PackageReference Include="System.Threading.Channels" Version="9.0.0" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">

src/Runner.Worker/Runner.Worker.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
     <SelfContained>true</SelfContained>
@@ -19,9 +19,9 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="8.0.0" />
-    <PackageReference Include="System.ServiceProcess.ServiceController" Version="8.0.0" />
-    <PackageReference Include="System.Threading.Channels" Version="8.0.0" />
+    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="9.0.0" />
+    <PackageReference Include="System.ServiceProcess.ServiceController" Version="9.0.0" />
+    <PackageReference Include="System.Threading.Channels" Version="9.0.0" />
     <PackageReference Include="YamlDotNet.Signed" Version="5.3.0" />
   </ItemGroup>
 

src/Sdk/Sdk.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <OutputType>Library</OutputType>
         <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
         <!-- <SelfContained>true</SelfContained> -->
@@ -20,12 +20,14 @@
         <PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="6.0.0" />
         <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="7.5.1" />
         <PackageReference Include="System.Security.Cryptography.Cng" Version="5.0.0" />
-        <PackageReference Include="System.Security.Cryptography.Pkcs" Version="8.0.0" />
-        <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="8.0.0" />
+        <PackageReference Include="System.Security.Cryptography.Pkcs" Version="9.0.0" />
+        <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="9.0.0" />
         <PackageReference Include="Minimatch" Version="2.0.0" />
         <PackageReference Include="YamlDotNet.Signed" Version="5.3.0" />
         <PackageReference Include="System.Net.Http" Version="4.3.4" />
         <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
+        <PackageReference Include="System.Private.Uri" Version="4.3.2" />
+        <PackageReference Include="System.Formats.Asn1" Version="8.0.1" />
     </ItemGroup>
 
     <ItemGroup>

src/Test/L0/Listener/BrokerMessageListenerL0.cs

@@ -33,7 +33,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void CreatesSession()
+        public async Task CreatesSession()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())

src/Test/L0/Listener/ErrorThrottlerL0.cs

@@ -24,7 +24,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [InlineData(6)]
         [InlineData(7)]
         [InlineData(8)]
-        public async void TestIncrementAndWait(int totalAttempts)
+        public async Task TestIncrementAndWait(int totalAttempts)
         {
             using (TestHostContext hc = CreateTestContext())
             {
@@ -97,7 +97,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         }
 
         [Fact]
-        public async void TestReset()
+        public async Task TestReset()
         {
             using (TestHostContext hc = CreateTestContext())
             {
@@ -151,7 +151,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         }
 
         [Fact]
-        public async void TestReceivesCancellationToken()
+        public async Task TestReceivesCancellationToken()
         {
             using (TestHostContext hc = CreateTestContext())
             {
@@ -180,7 +180,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         }
 
         [Fact]
-        public async void TestReceivesSender()
+        public async Task TestReceivesSender()
         {
             using (TestHostContext hc = CreateTestContext())
             {

src/Test/L0/Listener/JobDispatcherL0.cs

@@ -49,7 +49,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatchesJobRequest()
+        public async Task DispatchesJobRequest()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -99,7 +99,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatcherRenewJobRequest()
+        public async Task DispatcherRenewJobRequest()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -157,7 +157,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatcherRenewJobRequestStopOnJobNotFoundExceptions()
+        public async Task DispatcherRenewJobRequestStopOnJobNotFoundExceptions()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -216,7 +216,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatcherRenewJobOnRunServiceStopOnJobNotFoundExceptions()
+        public async Task DispatcherRenewJobOnRunServiceStopOnJobNotFoundExceptions()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -285,7 +285,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatcherRenewJobRequestStopOnJobTokenExpiredExceptions()
+        public async Task DispatcherRenewJobRequestStopOnJobTokenExpiredExceptions()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -344,7 +344,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void RenewJobRequestNewAgentNameUpdatesSettings()
+        public async Task RenewJobRequestNewAgentNameUpdatesSettings()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -401,7 +401,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void RenewJobRequestSameAgentNameIgnored()
+        public async Task RenewJobRequestSameAgentNameIgnored()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -456,7 +456,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void RenewJobRequestNullAgentNameIgnored()
+        public async Task RenewJobRequestNullAgentNameIgnored()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -509,7 +509,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatcherRenewJobRequestRecoverFromExceptions()
+        public async Task DispatcherRenewJobRequestRecoverFromExceptions()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -570,7 +570,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatcherRenewJobRequestFirstRenewRetrySixTimes()
+        public async Task DispatcherRenewJobRequestFirstRenewRetrySixTimes()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -625,7 +625,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatcherRenewJobRequestStopOnExpiredRequest()
+        public async Task DispatcherRenewJobRequestStopOnExpiredRequest()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -691,7 +691,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DispatchesOneTimeJobRequest()
+        public async Task DispatchesOneTimeJobRequest()
         {
             //Arrange
             using (var hc = new TestHostContext(this))

src/Test/L0/Listener/MessageListenerL0.cs

@@ -51,7 +51,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void CreatesSession()
+        public async Task CreatesSession()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())
@@ -95,7 +95,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void CreatesSessionWithBrokerMigration()
+        public async Task CreatesSessionWithBrokerMigration()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())
@@ -157,7 +157,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DeleteSession()
+        public async Task DeleteSession()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())
@@ -204,7 +204,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void DeleteSessionWithBrokerMigration()
+        public async Task DeleteSessionWithBrokerMigration()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())
@@ -281,7 +281,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void GetNextMessage()
+        public async Task GetNextMessage()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())
@@ -362,7 +362,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void GetNextMessageWithBrokerMigration()
+        public async Task GetNextMessageWithBrokerMigration()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())
@@ -468,7 +468,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void CreateSessionWithOriginalCredential()
+        public async Task CreateSessionWithOriginalCredential()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())
@@ -513,7 +513,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void SkipDeleteSession_WhenGetNextMessageGetTaskAgentAccessTokenExpiredException()
+        public async Task SkipDeleteSession_WhenGetNextMessageGetTaskAgentAccessTokenExpiredException()
         {
             using (TestHostContext tc = CreateTestContext())
             using (var tokenSource = new CancellationTokenSource())

src/Test/L0/Listener/RunnerL0.cs

@@ -57,7 +57,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
         //process 2 new job messages, and one cancel message
-        public async void TestRunAsync()
+        public async Task TestRunAsync()
         {
             using (var hc = new TestHostContext(this))
             {
@@ -169,7 +169,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [MemberData(nameof(RunAsServiceTestData))]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestExecuteCommandForRunAsService(string[] args, bool configureAsService, Times expectedTimes)
+        public async Task TestExecuteCommandForRunAsService(string[] args, bool configureAsService, Times expectedTimes)
         {
             using (var hc = new TestHostContext(this))
             {
@@ -201,7 +201,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestMachineProvisionerCLI()
+        public async Task TestMachineProvisionerCLI()
         {
             using (var hc = new TestHostContext(this))
             {
@@ -235,7 +235,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestRunOnce()
+        public async Task TestRunOnce()
         {
             using (var hc = new TestHostContext(this))
             {
@@ -332,7 +332,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestRunOnceOnlyTakeOneJobMessage()
+        public async Task TestRunOnceOnlyTakeOneJobMessage()
         {
             using (var hc = new TestHostContext(this))
             {
@@ -433,7 +433,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestRunOnceHandleUpdateMessage()
+        public async Task TestRunOnceHandleUpdateMessage()
         {
             using (var hc = new TestHostContext(this))
             {
@@ -523,7 +523,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestRemoveLocalRunnerConfig()
+        public async Task TestRemoveLocalRunnerConfig()
         {
             using (var hc = new TestHostContext(this))
             {

src/Test/L0/Listener/SelfUpdaterL0.cs

@@ -78,7 +78,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestSelfUpdateAsync()
+        public async Task TestSelfUpdateAsync()
         {
             try
             {
@@ -137,7 +137,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestSelfUpdateAsync_NoUpdateOnOldVersion()
+        public async Task TestSelfUpdateAsync_NoUpdateOnOldVersion()
         {
             try
             {
@@ -188,7 +188,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestSelfUpdateAsync_DownloadRetry()
+        public async Task TestSelfUpdateAsync_DownloadRetry()
         {
             try
             {
@@ -241,7 +241,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestSelfUpdateAsync_ValidateHash()
+        public async Task TestSelfUpdateAsync_ValidateHash()
         {
             try
             {

src/Test/L0/Listener/SelfUpdaterV2L0.cs

@@ -74,7 +74,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestSelfUpdateAsync()
+        public async Task TestSelfUpdateAsync()
         {
             try
             {
@@ -134,7 +134,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestSelfUpdateAsync_DownloadRetry()
+        public async Task TestSelfUpdateAsync_DownloadRetry()
         {
             try
             {
@@ -183,7 +183,7 @@ namespace GitHub.Runner.Common.Tests.Listener
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
-        public async void TestSelfUpdateAsync_ValidateHash()
+        public async Task TestSelfUpdateAsync_ValidateHash()
         {
             try
             {

src/Test/L0/Worker/ActionManagerL0.cs

@@ -38,7 +38,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_DownloadActionFromDotCom_OnPremises_Legacy()
+        public async Task PrepareActions_DownloadActionFromDotCom_OnPremises_Legacy()
         {
             try
             {
@@ -99,7 +99,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_DownloadActionFromDotCom_ZipFileError()
+        public async Task PrepareActions_DownloadActionFromDotCom_ZipFileError()
         {
             try
             {
@@ -156,7 +156,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_DownloadUnknownActionFromGraph_OnPremises_Legacy()
+        public async Task PrepareActions_DownloadUnknownActionFromGraph_OnPremises_Legacy()
         {
             try
             {
@@ -216,7 +216,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_PullImageFromDockerHub()
+        public async Task PrepareActions_PullImageFromDockerHub()
         {
             try
             {
@@ -254,7 +254,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_DownloadActionFromGraph()
+        public async Task PrepareActions_DownloadActionFromGraph()
         {
             try
             {
@@ -296,7 +296,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_DownloadActionFromGraph_UseCache()
+        public async Task PrepareActions_DownloadActionFromGraph_UseCache()
         {
             try
             {
@@ -406,7 +406,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_AlwaysClearActionsCache()
+        public async Task PrepareActions_AlwaysClearActionsCache()
         {
             try
             {
@@ -436,7 +436,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_SkipDownloadActionForSelfRepo()
+        public async Task PrepareActions_SkipDownloadActionForSelfRepo()
         {
             try
             {
@@ -472,7 +472,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithDockerfile()
+        public async Task PrepareActions_RepositoryActionWithDockerfile()
         {
             try
             {
@@ -511,7 +511,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithDockerfileInRelativePath()
+        public async Task PrepareActions_RepositoryActionWithDockerfileInRelativePath()
         {
             try
             {
@@ -552,7 +552,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithActionfile_Dockerfile()
+        public async Task PrepareActions_RepositoryActionWithActionfile_Dockerfile()
         {
             try
             {
@@ -591,7 +591,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithActionfile_DockerfileRelativePath()
+        public async Task PrepareActions_RepositoryActionWithActionfile_DockerfileRelativePath()
         {
             try
             {
@@ -631,7 +631,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithActionfile_DockerHubImage()
+        public async Task PrepareActions_RepositoryActionWithActionfile_DockerHubImage()
         {
             try
             {
@@ -670,7 +670,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithActionYamlFile_DockerHubImage()
+        public async Task PrepareActions_RepositoryActionWithActionYamlFile_DockerHubImage()
         {
             try
             {
@@ -709,7 +709,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithActionfileAndDockerfile()
+        public async Task PrepareActions_RepositoryActionWithActionfileAndDockerfile()
         {
             try
             {
@@ -749,7 +749,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_NotPullOrBuildImagesMultipleTimes()
+        public async Task PrepareActions_NotPullOrBuildImagesMultipleTimes()
         {
             try
             {
@@ -889,7 +889,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithActionfile_Node()
+        public async Task PrepareActions_RepositoryActionWithActionfile_Node()
         {
             try
             {
@@ -926,7 +926,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithInvalidWrapperActionfile_Node()
+        public async Task PrepareActions_RepositoryActionWithInvalidWrapperActionfile_Node()
         {
             try
             {
@@ -969,7 +969,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_RepositoryActionWithWrapperActionfile_PreSteps()
+        public async Task PrepareActions_RepositoryActionWithWrapperActionfile_PreSteps()
         {
             try
             {
@@ -1024,7 +1024,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_CompositeActionWithActionfile_Node()
+        public async Task PrepareActions_CompositeActionWithActionfile_Node()
         {
             try
             {
@@ -1067,7 +1067,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_CompositeActionWithActionfile_MaxLimit()
+        public async Task PrepareActions_CompositeActionWithActionfile_MaxLimit()
         {
             try
             {
@@ -1107,7 +1107,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_CompositeActionWithActionfile_CompositePrestepNested()
+        public async Task PrepareActions_CompositeActionWithActionfile_CompositePrestepNested()
         {
             try
             {
@@ -1149,7 +1149,7 @@ runs:
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void PrepareActions_CompositeActionWithActionfile_CompositeContainerNested()
+        public async Task PrepareActions_CompositeActionWithActionfile_CompositeContainerNested()
         {
             try
             {

src/Test/L0/Worker/ActionRunnerL0.cs

@@ -11,6 +11,7 @@ using System;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using System.Threading;
+using System.Threading.Tasks;
 using Xunit;
 using Pipelines = GitHub.DistributedTask.Pipelines;
 
@@ -33,7 +34,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void MergeDefaultInputs()
+        public async Task MergeDefaultInputs()
         {
             //Arrange
             Setup();
@@ -79,7 +80,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void WriteEventPayload()
+        public async Task WriteEventPayload()
         {
             //Arrange
             Setup();
@@ -319,7 +320,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void WarnInvalidInputs()
+        public async Task WarnInvalidInputs()
         {
             //Arrange
             Setup();
@@ -372,7 +373,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void SetGitHubContextActionRepoRef()
+        public async Task SetGitHubContextActionRepoRef()
         {
             //Arrange
             Setup();

src/Test/L0/Worker/ContainerOperationProviderL0.cs

@@ -32,7 +32,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void RunServiceContainersHealthcheck_UnhealthyServiceContainer_AssertFailedTask()
+        public async Task RunServiceContainersHealthcheck_UnhealthyServiceContainer_AssertFailedTask()
         {
             //Arrange
             Setup();
@@ -54,7 +54,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void RunServiceContainersHealthcheck_UnhealthyServiceContainer_AssertExceptionThrown()
+        public async Task RunServiceContainersHealthcheck_UnhealthyServiceContainer_AssertExceptionThrown()
         {
             //Arrange
             Setup();
@@ -68,7 +68,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void RunServiceContainersHealthcheck_healthyServiceContainer_AssertSucceededTask()
+        public async Task RunServiceContainersHealthcheck_healthyServiceContainer_AssertSucceededTask()
         {
             //Arrange
             Setup();
@@ -85,7 +85,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void RunServiceContainersHealthcheck_healthyServiceContainerWithoutHealthcheck_AssertSucceededTask()
+        public async Task RunServiceContainersHealthcheck_healthyServiceContainerWithoutHealthcheck_AssertSucceededTask()
         {
             //Arrange
             Setup();

src/Test/L0/Worker/OutputManagerL0.cs

@@ -647,7 +647,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void MatcherFile()
+        public async Task MatcherFile()
         {
             Environment.SetEnvironmentVariable("RUNNER_TEST_GET_REPOSITORY_PATH_FAILSAFE", "2");
             var matchers = new IssueMatchersConfig
@@ -761,7 +761,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void MatcherFile_JobContainer()
+        public async Task MatcherFile_JobContainer()
         {
             var matchers = new IssueMatchersConfig
             {
@@ -822,7 +822,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void MatcherFile_StepContainer()
+        public async Task MatcherFile_StepContainer()
         {
             var matchers = new IssueMatchersConfig
             {
@@ -884,7 +884,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void MatcherFromPath()
+        public async Task MatcherFromPath()
         {
             var matchers = new IssueMatchersConfig
             {

src/Test/L0/Worker/SnapshotOperationProviderL0.cs

@@ -2,6 +2,7 @@
 using System;
 using System.IO;
 using System.Runtime.CompilerServices;
+using System.Threading.Tasks;
 using GitHub.DistributedTask.Pipelines;
 using GitHub.Runner.Sdk;
 using GitHub.Runner.Worker;
@@ -22,7 +23,7 @@ public class SnapshotOperationProviderL0
     [InlineData(false)]
     [Trait("Level", "L0")]
     [Trait("Category", "Worker")]
-    public async void CreateSnapshotRequestAsync(bool shouldSnapshotDirectoryAlreadyExist)
+    public async Task CreateSnapshotRequestAsync(bool shouldSnapshotDirectoryAlreadyExist)
     {
         using (TestHostContext testHostContext = CreateTestHostContext())
         {

src/Test/L0/Worker/WorkerL0.cs

@@ -79,7 +79,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void DispatchRunNewJob()
+        public async Task DispatchRunNewJob()
         {
             //Arrange
             using (var hc = new TestHostContext(this))
@@ -131,7 +131,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
-        public async void DispatchCancellation()
+        public async Task DispatchCancellation()
         {
             //Arrange
             using (var hc = new TestHostContext(this))

src/Test/Test.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64;win-arm64</RuntimeIdentifiers>
         <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
         <NoWarn>NU1701;NU1603;NU1603;xUnit2013;SYSLIB0050;SYSLIB0051</NoWarn>
@@ -15,9 +15,9 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-        <PackageReference Include="xunit" Version="2.7.1" />
-        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.8" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+        <PackageReference Include="xunit" Version="2.9.2" />
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
         <PackageReference Include="System.Buffers" Version="4.5.1" />
         <PackageReference Include="System.Reflection.TypeExtensions" Version="4.7.0" />
         <PackageReference Include="System.Threading.ThreadPool" Version="4.3.0" />

src/dev.sh

@@ -17,7 +17,7 @@ LAYOUT_DIR="$SCRIPT_DIR/../_layout"
 DOWNLOAD_DIR="$SCRIPT_DIR/../_downloads/netcore2x"
 PACKAGE_DIR="$SCRIPT_DIR/../_package"
 DOTNETSDK_ROOT="$SCRIPT_DIR/../_dotnetsdk"
-DOTNETSDK_VERSION="8.0.404"
+DOTNETSDK_VERSION="9.0.100"
 DOTNETSDK_INSTALLDIR="$DOTNETSDK_ROOT/$DOTNETSDK_VERSION"
 RUNNER_VERSION=$(cat runnerversion)
 

src/global.json

@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "8.0.404"
+    "version": "9.0.100"
   }
 }