diff --git a/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationFailedException.cs b/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationFailedException.cs
index f4ca0b7f20..23a597d0d9 100644
--- a/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationFailedException.cs
+++ b/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationFailedException.cs
@@ -4,7 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.Extensions.CompilationAbstractions;
+using Microsoft.AspNet.Diagnostics;
 
 namespace Microsoft.AspNet.Mvc.Razor.Compilation
 {
diff --git a/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationResult.cs b/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationResult.cs
index 16318d9b80..65bf7bf5fc 100644
--- a/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationResult.cs
+++ b/src/Microsoft.AspNet.Mvc.Razor/Compilation/CompilationResult.cs
@@ -3,7 +3,7 @@
 
 using System;
 using System.Collections.Generic;
-using Microsoft.Extensions.CompilationAbstractions;
+using Microsoft.AspNet.Diagnostics;
 
 namespace Microsoft.AspNet.Mvc.Razor.Compilation
 {
diff --git a/src/Microsoft.AspNet.Mvc.Razor/Compilation/RazorCompilationService.cs b/src/Microsoft.AspNet.Mvc.Razor/Compilation/RazorCompilationService.cs
index 92cadaa155..d231ef64e8 100644
--- a/src/Microsoft.AspNet.Mvc.Razor/Compilation/RazorCompilationService.cs
+++ b/src/Microsoft.AspNet.Mvc.Razor/Compilation/RazorCompilationService.cs
@@ -5,11 +5,10 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Microsoft.AspNet.Diagnostics;
 using Microsoft.AspNet.FileProviders;
 using Microsoft.AspNet.Razor;
 using Microsoft.AspNet.Razor.CodeGenerators;
-using Microsoft.Extensions.CompilationAbstractions;
-using Microsoft.Extensions.PlatformAbstractions;
 using Microsoft.Extensions.OptionsModel;
 
 namespace Microsoft.AspNet.Mvc.Razor.Compilation
@@ -96,7 +95,8 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
                 var compilationFailure = new CompilationFailure(
                     filePath,
                     fileContent,
-                    group.Select(parserError => CreateDiagnosticMessage(parserError, filePath)));
+                    compiledContent: string.Empty,
+                    messages: group.Select(parserError => CreateDiagnosticMessage(parserError, filePath)));
                 failures.Add(compilationFailure);
             }
 
@@ -106,11 +106,9 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
         private DiagnosticMessage CreateDiagnosticMessage(RazorError error, string filePath)
         {
             return new DiagnosticMessage(
-                errorCode: null,
                 message: error.Message,
                 formattedMessage: $"{error} ({error.Location.LineIndex},{error.Location.CharacterIndex}) {error.Message}",
                 filePath: filePath,
-                severity: DiagnosticMessageSeverity.Error,
                 startLine: error.Location.LineIndex + 1,
                 startColumn: error.Location.CharacterIndex,
                 endLine: error.Location.LineIndex + 1,
diff --git a/src/Microsoft.AspNet.Mvc.Razor/Compilation/RoslynCompilationService.cs b/src/Microsoft.AspNet.Mvc.Razor/Compilation/RoslynCompilationService.cs
index 76fb3eb28b..ecebb4a185 100644
--- a/src/Microsoft.AspNet.Mvc.Razor/Compilation/RoslynCompilationService.cs
+++ b/src/Microsoft.AspNet.Mvc.Razor/Compilation/RoslynCompilationService.cs
@@ -12,15 +12,16 @@ using System.Reflection.PortableExecutable;
 #if DOTNET5_5
 using System.Runtime.Loader;
 #endif
+using System.Runtime.Versioning;
 using Microsoft.AspNet.FileProviders;
 using Microsoft.AspNet.Mvc.Razor.Internal;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.Emit;
 using Microsoft.Dnx.Compilation.CSharp;
-using Microsoft.Extensions.CompilationAbstractions;
 using Microsoft.Extensions.PlatformAbstractions;
 using Microsoft.Extensions.OptionsModel;
+using Microsoft.AspNet.Diagnostics;
 
 namespace Microsoft.AspNet.Mvc.Razor.Compilation
 {
@@ -33,7 +34,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
         private readonly ConcurrentDictionary<string, AssemblyMetadata> _metadataFileCache =
             new ConcurrentDictionary<string, AssemblyMetadata>(StringComparer.OrdinalIgnoreCase);
 
-        private readonly ILibraryExporter _libraryExporter;
+        private readonly Extensions.CompilationAbstractions.ILibraryExporter _libraryExporter;
         private readonly IApplicationEnvironment _environment;
         private readonly IFileProvider _fileProvider;
         private readonly Lazy<List<MetadataReference>> _applicationReferences;
@@ -53,14 +54,14 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
         /// <param name="loaderAccessor">
         /// The accessor for the <see cref="IAssemblyLoadContext"/> used to load compiled assemblies.
         /// </param>
-        /// <param name="libraryManager">The library manager that provides export and reference information.</param>
+        /// <param name="libraryExporter">The library manager that provides export and reference information.</param>
         /// <param name="compilerOptionsProvider">
         /// The <see cref="ICompilerOptionsProvider"/> that provides Roslyn compilation settings.
         /// </param>
         /// <param name="host">The <see cref="IMvcRazorHost"/> that was used to generate the code.</param>
         public RoslynCompilationService(
             IApplicationEnvironment environment,
-            ILibraryExporter libraryExporter,
+            Extensions.CompilationAbstractions.ILibraryExporter libraryExporter,
             IMvcRazorHost host,
             IOptions<RazorViewEngineOptions> optionsAccessor)
         {
@@ -73,7 +74,6 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
             _parseOptions = optionsAccessor.Value.ParseOptions;
             _compilationOptions = optionsAccessor.Value.CompilationOptions;
 
-
 #if DOTNET5_5
             _razorLoadContext = new RazorLoadContext();
 #endif
@@ -213,7 +213,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
                     sourceFilePath,
                     sourceFileContent,
                     compilationContent,
-                    group.Select(d => d.ToDiagnosticMessage(_environment.RuntimeFramework)));
+                    group.Select(diagnostic => GetDiagnosticMessage(diagnostic, _environment.RuntimeFramework)));
 
                 failures.Add(compilationFailure);
             }
@@ -269,7 +269,8 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
             return references;
         }
 
-        private MetadataReference ConvertMetadataReference(IMetadataReference metadataReference)
+        private MetadataReference ConvertMetadataReference(
+            Extensions.CompilationAbstractions.IMetadataReference metadataReference)
         {
             var roslynReference = metadataReference as IRoslynMetadataReference;
 
@@ -278,21 +279,21 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
                 return roslynReference.MetadataReference;
             }
 
-            var embeddedReference = metadataReference as IMetadataEmbeddedReference;
+            var embeddedReference = metadataReference as Extensions.CompilationAbstractions.IMetadataEmbeddedReference;
 
             if (embeddedReference != null)
             {
                 return MetadataReference.CreateFromImage(embeddedReference.Contents);
             }
 
-            var fileMetadataReference = metadataReference as IMetadataFileReference;
+            var fileMetadataReference = metadataReference as Extensions.CompilationAbstractions.IMetadataFileReference;
 
             if (fileMetadataReference != null)
             {
                 return CreateMetadataFileReference(fileMetadataReference.Path);
             }
 
-            var projectReference = metadataReference as IMetadataProjectReference;
+            var projectReference = metadataReference as Extensions.CompilationAbstractions.IMetadataProjectReference;
             if (projectReference != null)
             {
                 using (var ms = new MemoryStream())
@@ -346,6 +347,19 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
             return null;
         }
 
+        private static DiagnosticMessage GetDiagnosticMessage(Diagnostic diagnostic, FrameworkName targetFramework)
+        {
+            var mappedLineSpan = diagnostic.Location.GetMappedLineSpan();
+            return new DiagnosticMessage(
+                diagnostic.GetMessage(),
+                RoslynDiagnosticFormatter.Format(diagnostic, targetFramework),
+                mappedLineSpan.Path,
+                mappedLineSpan.StartLinePosition.Line + 1,
+                mappedLineSpan.StartLinePosition.Character + 1,
+                mappedLineSpan.EndLinePosition.Line + 1,
+                mappedLineSpan.EndLinePosition.Character + 1);
+        }
+
 #if DOTNET5_5
         private class RazorLoadContext : AssemblyLoadContext
         {
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilationResultTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilationResultTest.cs
index 41ffba39db..665cf84ef4 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilationResultTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilationResultTest.cs
@@ -2,7 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Linq;
-using Microsoft.Extensions.CompilationAbstractions;
+using Microsoft.AspNet.Diagnostics;
 using Xunit;
 
 namespace Microsoft.AspNet.Mvc.Razor.Compilation
@@ -13,7 +13,11 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
         public void EnsureSuccessful_ThrowsIfCompilationFailed()
         {
             // Arrange
-            var compilationFailure = new CompilationFailure("test", Enumerable.Empty<Microsoft.Extensions.CompilationAbstractions.DiagnosticMessage>());
+            var compilationFailure = new CompilationFailure(
+                "test",
+                sourceFileContent: string.Empty,
+                compiledContent: string.Empty,
+                messages: Enumerable.Empty<AspNet.Diagnostics.DiagnosticMessage>());
             var failures = new[] { compilationFailure };
             var result = new CompilationResult(failures);