Steps to reproduce:
1. Download attached project
2. Switch platform to UWP
3. Build project

Results: Build will fail with a Burst compiler failed running and Failed to resolve assembly exceptions.

Reproduced with: 2019.2.8f1
Not reproducible with: 2020.1.0a7, 2019.3.0b5, 2018.4.10f1

Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: 'Windows.Foundation.FoundationContract, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null'
at Mono.Cecil.BaseAssemblyResolver.Resolve(AssemblyNameReference name, ReaderParameters parameters)
at Burst.Compiler.IL.AssemblyLoader.Resolve(AssemblyNameReference name)
at Mono.Cecil.MetadataResolver.Resolve(TypeReference type)
at Mono.Cecil.TypeReference.Resolve()
at Burst.Bcl.BclApp.FindExecuteMethods(List`1 rootAssemblyPaths)
at Burst.Bcl.BclApp.GetMethodsToCompileBeforeDynamicDispatch()
at Burst.Bcl.BclApp.GetMethodsToCompile()
at Burst.Bcl.Program.Main(String[] args)

BuildFailedException: Burst compiler (1.2.0-preview.5) failed running
stdout:
An unexpected exception occurred:
stderr:
Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: 'Windows.Foundation.FoundationContract, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null'
at Mono.Cecil.BaseAssemblyResolver.Resolve(AssemblyNameReference name, ReaderParameters parameters)
at Burst.Compiler.IL.AssemblyLoader.Resolve(AssemblyNameReference name)
at Mono.Cecil.MetadataResolver.Resolve(TypeReference type)
at Mono.Cecil.TypeReference.Resolve()
at Burst.Bcl.BclApp.FindExecuteMethods(List`1 rootAssemblyPaths)
at Burst.Bcl.BclApp.GetMethodsToCompileBeforeDynamicDispatch()
at Burst.Bcl.BclApp.GetMethodsToCompile()
at Burst.Bcl.Program.Main(String[] args)