Fixed up BuildBoss

src/Compilers/CSharp/Test/WinRT/Microsoft.CodeAnalysis.CSharp.WinRT.UnitTests.csproj

@@ -8,7 +8,6 @@
     <RootNamespace>Microsoft.CodeAnalysis.CSharp.UnitTests.CodeGen</RootNamespace>
     <TargetFrameworks>$(RoslynPortableTargetFrameworks)</TargetFrameworks>
     <RoslynProjectType>UnitTestPortable</RoslynProjectType>
-    <RoslynProjectType>UnitTest</RoslynProjectType>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'" />

src/Tools/BuildBoss/Program.cs

@@ -51,7 +51,9 @@ private static bool MainCore(string[] args)
 
             if (string.IsNullOrEmpty(repositoryDirectory))
             {
-                repositoryDirectory = AppContext.BaseDirectory;
+                repositoryDirectory = solutionFiles.Count > 0
+                    ? Path.GetDirectoryName(solutionFiles[0])
+                    : AppContext.BaseDirectory;
             }
 
             return Go(repositoryDirectory, isRelease, solutionFiles);

src/Tools/BuildBoss/ProjectCheckerUtil.cs

@@ -110,8 +110,9 @@ private bool ParseRoslynProjectData(TextWriter textWriter, out RoslynProjectData
             }
             catch (Exception ex)
             {
-                data = default(RoslynProjectData);
+                textWriter.WriteLine("Unable to parse Roslyn project properties");
                 textWriter.WriteLine(ex.Message);
+                data = default;
                 return false;
             }
         }