AssemblyInfo.cs issue with TeamCity

Question

I have an issue with a C# project. When built from Visual Studio (or by using MSBuild from command-line), the project is compiled with no issue.

However, we are also working with TeamCity and the compilation fails:

[16:41:51][Step 1/1] (CoreCompile target) -> 
[16:41:51][Step 1/1]   AssemblyInfo.cs(4,12): error CS0246: The type or namespace name 'AssemblyVersionAttribute' could not be found (are you missing a using directive or an assembly reference?) [C:\BuildAgent\work\d567fa3cb4955788\src\PowerSaver.IO.Channel\PowerSaver.IO.Channel.csproj]
[16:41:51][Step 1/1]   AssemblyInfo.cs(4,12): error CS0246: The type or namespace name 'AssemblyVersion' could not be found (are you missing a using directive or an assembly reference?) [C:\BuildAgent\work\d567fa3cb4955788\src\PowerSaver.IO.Channel\PowerSaver.IO.Channel.csproj]
[16:41:51][Step 1/1]   AssemblyInfo.cs(5,12): error CS0246: The type or namespace name 'AssemblyInformationalVersionAttribute' could not be found (are you missing a using directive or an assembly reference?) [C:\BuildAgent\work\d567fa3cb4955788\src\PowerSaver.IO.Channel\PowerSaver.IO.Channel.csproj]
[16:41:51][Step 1/1]   AssemblyInfo.cs(5,12): error CS0246: The type or namespace name 'AssemblyInformationalVersion' could not be found (are you missing a using directive or an assembly reference?) [C:\BuildAgent\work\d567fa3cb4955788\src\PowerSaver.IO.Channel\PowerSaver.IO.Channel.csproj]
[16:41:51][Step 1/1]   AssemblyInfo.cs(6,12): error CS0246: The type or namespace name 'AssemblyFileVersionAttribute' could not be found (are you missing a using directive or an assembly reference?) [C:\BuildAgent\work\d567fa3cb4955788\src\PowerSaver.IO.Channel\PowerSaver.IO.Channel.csproj]
[16:41:51][Step 1/1]   AssemblyInfo.cs(6,12): error CS0246: The type or namespace name 'AssemblyFileVersion' could not be found (are you missing a using directive or an assembly reference?) [C:\BuildAgent\work\d567fa3cb4955788\src\PowerSaver.IO.Channel\PowerSaver.IO.Channel.csproj]
[16:41:51][Step 1/1] 
[16:41:51][Step 1/1]     0 Warning(s)
[16:41:51][Step 1/1]     6 Error(s)

I have found links to similar problems, but cannot solve my problem:

• https://github.com/MicrosoftDX/Dash/issues/2
• Source file 'Properties\AssemblyInfo.cs' could not be found
• Error CS0246: The type or namespace name 'AssemblyFileVersion' could not be found

Thanks in advance for your help.

EDIT (additional information):

• .NET Framework 4.6.1
• Visual Studio Community 2017 (15.5.6) (using .csproj new format, compiled with MSBuild)
• TeamCity Professional 2017.1.4 (build 47070) (no plugin used)
• The attributes mentioned in the error message are already defined in an AssemblyInfo.cs file

Cake script we use to build the project:

#tool "nuget:?package=xunit.runner.console"
#tool nuget:?package=GitVersion.CommandLine
#addin Cake.Incubator

// Build script arguments

var target = Argument("target", "Default");
var configuration = Argument("configuration", "Debug");

// Build script parameters

var rootDir = Directory(".");

var distDir = Directory("./dist");
var outputDir = Directory("./output");

var solutionFile = "./PowerSaver.sln";

GitVersion versionInfo;

// Tasks

Task("Clean")
    .Does(() =>
{
    CleanDirectories ("./src/**/" + configuration + "/bin");
    CleanDirectories ("./src/**/" + configuration + "/obj");
    CleanDirectories ("./test/**/" + configuration + "/bin");
    CleanDirectories ("./test/**/" + configuration + "/obj");

    CleanDirectory(distDir);
    CleanDirectory(outputDir);
});

Task("Restore-NuGet-Packages")
    .IsDependentOn("Clean")
    .Does(() =>
{
    NuGetRestore(solutionFile);
});

Task("Set-Version")
    .Does(() => 
{
    Information("Working directory: {0}", rootDir);

    var isRunningOnTeamCity = BuildSystem.TeamCity.IsRunningOnTeamCity;

    var gitVersionLog = rootDir + File("gitversion.log");

    versionInfo = GitVersion(new GitVersionSettings {
        UpdateAssemblyInfo = isRunningOnTeamCity,
        RepositoryPath = rootDir,
        LogFilePath = gitVersionLog
    });

    Information("Building PowerSaver WebApp version {0}", versionInfo.FullSemVer);

    Information("Assembly semver {0}", versionInfo.AssemblySemVer);
    Information("Full build meta {0}", versionInfo.FullBuildMetaData);
    Information("Build meta padded {0}", versionInfo.BuildMetaDataPadded);
    Information("Build meta {0}", versionInfo.BuildMetaData);
    Information("Building version {0}", versionInfo.FullSemVer);
    Information("Semver {0}", versionInfo.SemVer);
    Information("LegacySemver {0}", versionInfo.LegacySemVer);
    Information("NuGet version {0}", versionInfo.NuGetVersion);
    Information("NuGet version v2 {0}", versionInfo.NuGetVersionV2);

    if(isRunningOnTeamCity)
    {
        Information(
            @"Environment:
            PullRequest: {0}
            Build Configuration Name: {1}
            TeamCity Project Name: {2}",
            BuildSystem.TeamCity.Environment.PullRequest.IsPullRequest,
            BuildSystem.TeamCity.Environment.Build.BuildConfName,
            BuildSystem.TeamCity.Environment.Project.Name
        );

        BuildSystem.TeamCity.SetBuildNumber(versionInfo.FullSemVer);
    }
    else
    {
        Information("Not running on TeamCity");
    }
});


Task("Build")
    .IsDependentOn("Restore-NuGet-Packages")
    .IsDependentOn("Set-Version")
    .Does(() =>
{
    var settings = new MSBuildSettings {

        Verbosity = Verbosity.Normal,
        ToolVersion = MSBuildToolVersion.VS2017,
        Configuration = configuration,
        PlatformTarget = PlatformTarget.MSIL
    }
    .WithProperty("RunOctoPack", "true")
    .WithProperty("OctoPackPackageVersion", versionInfo.NuGetVersionV2)
    .WithProperty("OctoPackEnforceAddingFiles", "true")
    .WithProperty("OctoPackNuGetExePath", "C:/Apps/nuget.exe");

    MSBuild(solutionFile, settings);
});

Task("Copy-Packages")
    .Does(() => 
{

    var packageVersion = versionInfo.NuGetVersionV2;

    var modules = new [] 
    {
        "PowerSaverCore"
    };

    foreach (var module in modules)
    {
        var directory = Directory("./src/" + module + "/obj/octopacked");
        var packageFile = directory + File(module + "." + packageVersion + ".nupkg");

        CopyFileToDirectory(packageFile, distDir);
    }
});

Task("Package")
    .IsDependentOn("Build")
    .IsDependentOn("Copy-Packages");

Task("Run-Tests")
    .Description("Executes xUnit tests")
    .Does(() =>
{
    // See https://github.com/cake-build/cake/issues/1577
    var testProjects = GetFiles("./test/**/*UnitTests.csproj");

    foreach(var testProject in testProjects)
    {
        DotNetCoreTool(testProject, "xunit", "-xml report.xml");
    }
});


// Targets

Task("Default")
    .IsDependentOn("Package")
    .IsDependentOn("Run-Tests");

RunTarget(target);

Solution

The building script was creating an AssemblyInfo.cs file by itself. We just had to delete the existing AssemblyInfo.cs file.