Steps to reproduce:
1. Create a new project
2. Add Immediate Window package from Package Manager Window
3. Switch platform to UWP and build project

Results: Build fails with exception
UnityException: Failed to run reference rewriter with command "--target=Temp\StagingArea\Data\Managed\com.unity.multiplayer-hlapi.Runtime.dll" "--target=Temp\StagingArea\Data\Managed\UnityEngine.SpatialTracking.dll" "--target=Temp\StagingArea\Data\Managed\Unity.Analytics.DataPrivacy.dll" "--target=Temp\StagingArea\Data\Managed\Unity.TextMeshPro.dll" "--target=Temp\StagingArea\Data\Managed\Unity.Timeline.dll" "--target=Temp\StagingArea\Data\Managed\UnityEngine.XR.LegacyInputHelpers.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.CodeAnalysis.Workspaces.dll"

Reproduced with: 2019.3.0a2, 2019.2.0b1, 2019.1.2f1
Reproducible with Package: Immediate Window 1.0.0 - repview.4/3

Note:
- not reproducible in 2018.4 with 0.0.1 - preview.5 package, this package version doesn't work in 2019.x (package throws exceptions). Later versions of the Immediate Window package isn't available in 2018.4.
- Tested and wasn't able to reproduce when building Standalone, iOS players.