Updating the UTP package to pre-.9, which fixes the aforementioned bug with the Roslyn analyzers.

Packages/manifest.json

     "com.unity.test-framework": "1.1.29",
     "com.unity.textmeshpro": "3.0.6",
     "com.unity.toolchain.win-x86_64-linux-x86_64": "0.1.20-preview",
-    "com.unity.transport": "1.0.0-pre.8",
+    "com.unity.transport": "1.0.0-pre.9",
     "com.unity.ugui": "1.0.0",
     "com.unity.modules.ai": "1.0.0",
     "com.unity.modules.androidjni": "1.0.0",

Packages/packages-lock.json

       "url": "https://packages.unity.com"
     },
     "com.unity.transport": {
-      "version": "1.0.0-pre.8",
+      "version": "1.0.0-pre.9",
       "depth": 0,
       "source": "registry",
       "dependencies": {

ProjectSettings/ProjectSettings.asset

   allowUnsafeCode: 0
   useDeterministicCompilation: 1
   useReferenceAssemblies: 1
-  enableRoslynAnalyzers: 0
+  enableRoslynAnalyzers: 1
   additionalIl2CppArgs: 
   scriptingRuntimeVersion: 1
   gcIncremental: 1