diff --git a/dir.props b/dir.props
index f65f45b05666..aff578b06ec3 100644
--- a/dir.props
+++ b/dir.props
@@ -25,12 +25,6 @@
     <InputOSGroup Condition="'$(InputOSGroup)'==''">$(OSEnvironment)</InputOSGroup>
   </PropertyGroup>
 
-  <!-- Build Tools Versions -->
-  <PropertyGroup>
-    <RoslynVersion>1.0.0-rc3-20150510-01</RoslynVersion>
-    <RoslynPackageName>Microsoft.Net.ToolsetCompilers</RoslynPackageName>
-  </PropertyGroup>
-
   <!-- Informs build tools to apply .NET Framework metadata if not a test project -->
   <PropertyGroup>
     <IsDotNetFrameworkProductAssembly>true</IsDotNetFrameworkProductAssembly>
@@ -55,14 +49,9 @@
 
     <!-- Input Directories -->
     <PackagesDir Condition="'$(PackagesDir)'==''">$(ProjectDir)packages/</PackagesDir>
-    <ToolRuntimePath Condition="'$(ToolRuntimePath)'==''">$(ProjectDir)Tools/</ToolRuntimePath>
     <ToolsDir Condition="'$(UseToolRuntimeForToolsDir)'=='true'">$(ToolRuntimePath)</ToolsDir>
     <ToolsDir Condition="'$(ToolsDir)'==''">$(ProjectDir)Tools/</ToolsDir>
-    <DotnetCliPath Condition="'$(DotnetCliPath)'==''">$(ToolRuntimePath)dotnetcli/</DotnetCliPath>
-    <OverrideToolHost>$(DotnetCliPath)dotnet</OverrideToolHost>
-    <BuildToolsTaskDir Condition="'$(BuildToolsTargets45)' == 'true'">$(ToolsDir)net45/</BuildToolsTaskDir>
-    <BuildToolsTaskDir Condition="'$(BuildToolsTaskDir)'==''">$(ToolsDir)</BuildToolsTaskDir>
-    <UseRoslynCompilers Condition="'$(UseRoslynCompilers)'=='' and '$(OSEnvironment)'!='Windows_NT'">false</UseRoslynCompilers>
+    <ToolRuntimePath Condition="'$(ToolRuntimePath)'==''">$(ToolsDir)</ToolRuntimePath>
   </PropertyGroup>
 
   <Import Project="$(ToolRuntimePath)BuildVersion.targets" Condition="Exists('$(ToolRuntimePath)BuildVersion.targets')" />
@@ -71,12 +60,6 @@
     <GenFacadesArgs>-ignoreBuildAndRevisionMismatch</GenFacadesArgs>
   </PropertyGroup>
 
-  <!-- Use Roslyn Compilers to build -->
-  <PropertyGroup Condition="'$(UseRoslynCompilers)'!='false'">
-    <UseSharedCompilation>true</UseSharedCompilation>
-  </PropertyGroup>
-  <Import Project="$(ToolRuntimePath)/net45/roslyn/build/Microsoft.Net.Compilers.props" Condition="'$(UseRoslynCompilers)'!='false' AND Exists('$(ToolRuntimePath)/net45/roslyn/build/Microsoft.Net.Compilers.props')" />
-
   <!-- Import Build tools common props file where repo-independent properties are found -->
   <Import Project="$(ToolsDir)Build.Common.props" Condition="Exists('$(ToolsDir)Build.Common.props')" />
 
@@ -158,37 +141,6 @@
     <RestorePackages>false</RestorePackages>
   </PropertyGroup>
 
-  <!--
-    On Unix we always use a version of Roslyn we restore from NuGet and we have to work around some known issues.
-  -->
-  <PropertyGroup Condition="'$(OsEnvironment)'=='Unix'">
-    <RoslynPackageDir>$(PackagesDir)/$(RoslynPackageName).$(RoslynVersion)/</RoslynPackageDir>
-    <RoslynPropsFile>$(RoslynPackageDir)build/Microsoft.Net.ToolsetCompilers.props</RoslynPropsFile>
-
-    <!--
-      Portable PDBs are now supported in Linux and OSX with .Net Core MSBuild.
-    -->
-    <DebugType>Portable</DebugType>
-
-    <!--
-      Delay signing with the ECMA key currently doesn't work.
-      https://github.com/dotnet/roslyn/issues/2444
-    -->
-    <UseECMAKey>false</UseECMAKey>
-
-    <!--
-      Full signing with Open key doesn't work with Portable Csc.
-      https://github.com/dotnet/roslyn/issues/8210
-    -->
-    <UseOpenKey>false</UseOpenKey>
-
-    <!--
-      Mono currently doesn't include VB targets for portable, notably /lib/mono/xbuild/Microsoft/Portable/v4.5/Microsoft.Portable.VisualBasic.targets.
-      Fixed in https://github.com/mono/mono/pull/1726.
-    -->
-    <IncludeVbProjects>false</IncludeVbProjects>
-  </PropertyGroup>
-
   <PropertyGroup>
     <!-- By default make all libraries to be AnyCPU but individual projects can override it if they need to -->
     <Platform>AnyCPU</Platform>
@@ -592,6 +544,7 @@
     <SkipTests Condition="'$(SkipTests)'=='' and ('$(OsEnvironment)'=='Windows_NT' and '$(TargetsWindows)'!='true' and '$(OSGroup)'!='AnyOS')">true</SkipTests>
   </PropertyGroup>
 
-  <Import Project="$(RoslynPropsFile)" Condition="'$(OsEnvironment)'=='Unix' and Exists('$(RoslynPropsFile)')" />
-
+  <!-- Use Roslyn Compilers to build -->
+  <Import Project="$(RoslynPropsFile)" Condition="'$(OSEnvironment)'!='Unix' and Exists('$(RoslynPropsFile)') and '$(UseRoslynCompilers)'!='false'" />
+  <Import Project="$(RoslynPropsFile)" Condition="'$(OSEnvironment)'=='Unix' and Exists('$(RoslynPropsFile)')" />
 </Project>
diff --git a/src/System.Threading.Tasks.Dataflow/tests/Dataflow/ActionBlockTests.cs b/src/System.Threading.Tasks.Dataflow/tests/Dataflow/ActionBlockTests.cs
index d7f2464bcac5..55eff83f58f5 100644
--- a/src/System.Threading.Tasks.Dataflow/tests/Dataflow/ActionBlockTests.cs
+++ b/src/System.Threading.Tasks.Dataflow/tests/Dataflow/ActionBlockTests.cs
@@ -173,17 +173,17 @@ public async Task TestSchedulerUsage()
             {
                 var scheduler = new ConcurrentExclusiveSchedulerPair().ExclusiveScheduler;
 
-                var sync = new ActionBlock<int>(_ => Assert.Equal(scheduler.Id, TaskScheduler.Current.Id),
+                var actionBlockSync = new ActionBlock<int>(_ => Assert.Equal(scheduler.Id, TaskScheduler.Current.Id),
                     new ExecutionDataflowBlockOptions 
                     { 
                         TaskScheduler = scheduler,
                         SingleProducerConstrained = singleProducerConstrained
                     });
-                sync.PostRange(0, 10);
-                sync.Complete();
-                await sync.Completion;
+                actionBlockSync.PostRange(0, 10);
+                actionBlockSync.Complete();
+                await actionBlockSync.Completion;
 
-                var async = new ActionBlock<int>(_ => {
+                var actionBlockAsync = new ActionBlock<int>(_ => {
                     Assert.Equal(scheduler.Id, TaskScheduler.Current.Id);
                     return Task.FromResult(0);
                 }, new ExecutionDataflowBlockOptions
@@ -191,9 +191,9 @@ public async Task TestSchedulerUsage()
                         TaskScheduler = scheduler,
                         SingleProducerConstrained = singleProducerConstrained
                     });
-                async.PostRange(0, 10);
-                async.Complete();
-                await async.Completion;
+                actionBlockAsync.PostRange(0, 10);
+                actionBlockAsync.Complete();
+                await actionBlockAsync.Completion;
             }
         }