Do not write json error message to stderr

TestAssets/TestProjects/AppWithBomGlobalJson/Program.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace ConsoleApplication
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

TestAssets/TestProjects/AppWithBomGlobalJson/global.json

@@ -0,0 +1 @@
+{}

TestAssets/TestProjects/AppWithBomGlobalJson/project.json

@@ -0,0 +1,20 @@
+{
+  "version": "1.0.0-*",
+  "compilationOptions": {
+    "emitEntryPoint": true
+  },
+  "dependencies": {
+    "NETStandard.Library": "1.5.0-rc2-23930"
+  },
+  "frameworks": {
+    "netstandardapp1.5": {
+      "imports": "dnxcore50"
+    }
+  },
+  "tools": {
+    "dotnet-portable": {
+      "version": "1.0.0",
+      "target": "package"
+    }
+  }
+}

src/corehost/cli/fxr/fx_muxer.cpp

@@ -106,7 +106,7 @@ pal::string_t fx_muxer_t::resolve_cli_version(const pal::string_t& global_json)
     catch (const web::json::json_exception& je)
     {
         pal::string_t jes = pal::to_palstring(je.what());
-        trace::error(_X("A JSON parsing exception occurred: %s"), jes.c_str());
+        trace::info(_X("A JSON parsing exception occurred: %s"), jes.c_str());
     }
     trace::verbose(_X("CLI version is [%s] in global json file [%s]"), retval.c_str(), global_json.c_str());
     return retval;

src/corehost/cli/runtime_config.cpp

@@ -89,7 +89,7 @@ bool runtime_config_t::ensure_parsed()
     catch (const web::json::json_exception& je)
     {
         pal::string_t jes = pal::to_palstring(je.what());
-        trace::error(_X("A JSON parsing exception occurred: %s"), jes.c_str());
+        trace::info(_X("A JSON parsing exception occurred: %s"), jes.c_str());
         return false;
     }
     return true;