Description
Describe the bug
Running dotnet watch build --project .\MySolution.sln on a solution with ~30 projects and ~50k lines of code fails to compile due to a file being locked by the same process.
To Reproduce
I couldn't reproduce it through a minimal sample as my suspicion is due to a race condition with large projects. Also, running the command multiple times yields different number of projects that failed with the same exception, so the failure is non-deterministic.
Exceptions (if any)
dotnet watch ⌚ dotnet watch ⌚ Build FAILED.
dotnet watch ⌚ "D:\Repo\MySolution.sln" (GenerateWatchList target) (1) ->
dotnet watch ⌚ "D:\Repo\ChildProject\ChildProject.csproj" (GenerateWatchList target) (17) ->
dotnet watch ⌚ (GenerateWatchList target) ->
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: The "FileSetSerializer" task failed unexpectedly. [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: System.IO.IOException: The process cannot access the file 'C:\Users\user\AppData\Local\Temp\tmp43s5ay.tmp' because it is being used by another process. [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options) [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable1 unixCreateMode) [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable1 unixCreateMode) [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at System.IO.Strategies.FileStreamHelpers.ChooseStrategyCore(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable1 unixCreateMode) [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at System.IO.File.Create(String path) [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at DotNetWatchTasks.FileSetSerializer.Execute() [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at Microsoft.Build.BackEnd.TaskExecutionHost.Execute() [D:\Repo\ChildProject\ChildProject.csproj]
dotnet watch ⌚ C:\Program Files\dotnet\sdk\8.0.410\DotnetTools\dotnet-watch\8.0.410-servicing.25266.33\tools\net8.0\any\DotNetWatch.targets(20,5): error MSB4018: at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(TaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [D:\Repo\ChildProject\ChildProject.csproj]
Further technical details
- Include the output of
dotnet --info
.NET SDK:
Version: 8.0.410
Commit: 0c2bff86e8
Workload version: 8.0.400-manifests.5d19dc53
MSBuild version: 17.11.31+933b72e36
Runtime Environment:
OS Name: Windows
OS Version: 10.0.22631
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.410\
.NET workloads installed:
Configured to use loose manifests when installing new manifests.
[aspire]
Installation Source: VS 17.13.36105.23, VS 17.14.36025.13
Manifest Version: 8.2.2/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.2.2\WorkloadManifest.json
Install Type: FileBased
Host:
Version: 9.0.5
Architecture: x64
Commit: e36e4d1a8f
.NET SDKs installed:
8.0.410 [C:\Program Files\dotnet\sdk]
9.0.204 [C:\Program Files\dotnet\sdk]
9.0.300-preview.0.25177.5 [C:\Program Files\dotnet\sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.14 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.14 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.16 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]
Environment variables:
Not set
global.json file:
D:\Repo\global.json
- The IDE (VS / VS Code/ VS4Mac) you're running on, and its version
vscode 1.100.2