Fixed some errors

src/NuGet/Microsoft.Net.CSharp.Interactive.netcore.nuspec

@@ -19,7 +19,7 @@
       <group targetFramework="NETCoreApp1.0">
         <dependency id="Microsoft.CodeAnalysis.Compilers" version="$version$" />
         <dependency id="Microsoft.CodeAnalysis.Scripting" version="$version$" />
-        <dependency id="NETStandard.Library" version="$NETStandardLibraryVersion$" />
+        <dependency id="NETStandard.Library" version="1.6.0" />
       </group>
     </dependencies>
   </metadata>

src/Tools/RepoUtil/RepoData.json

@@ -22,7 +22,6 @@
                 "Microsoft.Dia.*",
                 "System.*",
                 "Microsoft.CodeAnalysis.Analyzers",
-                "Managed.Esent",
                 "Microsoft.VisualBasic",
                 "Microsoft.Composition"
             ]

src/Tools/RepoUtil/VerifyCommand.cs

@@ -26,10 +26,15 @@ internal VerifyCommand(RepoConfig repoConfig, string sourcesPath)
         public bool Run(TextWriter writer, string[] args)
         {
             RepoData repoData;
-            return
-                VerifyProjectJsonContents(writer, out repoData) &&
+            if (VerifyProjectJsonContents(writer, out repoData) &&
                 VerifyRepoConfig(writer) &&
-                VerifyGeneratedFiles(writer, repoData);
+                VerifyGeneratedFiles(writer, repoData))
+            {
+                return true;
+            }
+
+            writer.WriteLine($"Error! RepoUtil verification failed.");
+            return false;
         }
 
         /// <summary>