roslyn: Unable to install Microsoft.CodeAnalysis.CSharp in VS 2013

Version Used: 1.3.2

Steps to Reproduce:

1. Open VS 2013 Professional
2. Create new project
3. Try to install Microsoft.CodeAnalysis.CSharp package from https://www.nuget.org/api/v2/ feed

Expected Behavior: It got installed

Actual Behavior:

It fails with: Attempting to resolve dependency 'Microsoft.CodeAnalysis.Common (= 1.3.2)'. Attempting to resolve dependency 'System.Collections.Immutable (≥ 1.1.37)'. Attempting to resolve dependency 'System.Reflection.Metadata (≥ 1.2.0)'. 'System.Reflection.Metadata' already has a dependency defined for 'System.Collections.Immutable'.

The problem: we are using this package in BenchmarkDotNet 0.9.8 as the default compiler. People can’t install our package now.