title: Visual Studio 2015 project builds failed but no errors
body: <p>My project builds all fail but I'm not shown any errors. I tried cleaning and rebuilding, that didn't work. </p>
  
  <p>I changed the MSBuild output verbosity to 'Diagnostic' hoping it would help me identify the problem and now I'm stuck. Here's what the output looks like:</p>
  
  <pre><code>1&gt;Project 'ProjectMM.Data.Models' is not up to date. Input file 'C:\Projects\ProjectMM\ProjectMM.Data.Models\ProjectMM.Data.Models.csproj' is modified after output file 'C:\Projects\ProjectMM\ProjectMM.Data.Models\bin\Debug\ProjectMM.Data.Models.pdb'.
  All packages are already installed and there is nothing to restore.
  1&gt;------ Build started: Project: ProjectMM.Data.Models, Configuration: Debug Any CPU ------
  2&gt;Project 'ProjectMM.Data' is not up to date. Input file 'C:\Projects\ProjectMM\ProjectMM.Data\ProjectMM.Data.csproj' is modified after output file 'C:\Projects\ProjectMM\ProjectMM.Data\bin\Debug\ProjectMM.Data.pdb'.
  2&gt;------ Build started: Project: ProjectMM.Data, Configuration: Debug Any CPU ------
  3&gt;Project 'ProjectMM' is not up to date. Input file 'c:\projects\projectmm\projectmm\app_start\bundleconfig.cs' is modified after output file 'C:\Projects\ProjectMM\ProjectMM\bin\ProjectMM.pdb'.
  3&gt;------ Build started: Project: ProjectMM, Configuration: Debug Any CPU ------
  ========== Build: 0 succeeded, 3 failed, 0 up-to-date, 0 skipped ==========
  </code></pre>