UnauthorizedAccessException during compilation with 2021.2.0

**Bug description**

I upgraded one of my projects to 2021.2.0. Everything works in the editor, but the CI build fails

**How to reproduce**

- Create a unity build with 2021.2.0

**Expected behavior**

Project builds without error

**Additional details**

I'm using the image: unityci/editor:2021.2.0f1-windows-mono-0.15.0

When running the build on Windows and installing Unity via chocolatey, everything works as expected

Logs

```
Registering precompiled user dll's ...
Registered in 0.033312 seconds.
IOException: Permission denied
Rethrow as UnauthorizedAccessException: Access to the path '/opt/unity/Editor/Data/UnityReferenceAssemblies/unity-4.8-api/Facades' is denied.
at System.IO.Enumeration.FileSystemEnumerator`1[TResult].CreateDirectoryHandle (System.String path, System.Boolean ignoreNotFound) [0x00032] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerator`1[TResult]..ctor (System.String directory, System.IO.EnumerationOptions options) [0x00048] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1+DelegateEnumerator[TResult]..ctor (System.IO.Enumeration.FileSystemEnumerable`1[TResult] enumerable) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1[TResult]..ctor (System.String directory, System.IO.Enumeration.FileSystemEnumerable`1+FindTransform[TResult] transform, System.IO.EnumerationOptions options) [0x00042] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles (System.String directory, System.String expression, System.IO.EnumerationOptions options) [0x00014] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.InternalEnumeratePaths (System.String path, System.String searchPattern, System.IO.SearchTarget searchTarget, System.IO.EnumerationOptions options) [0x0003c] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern, System.IO.EnumerationOptions enumerationOptions) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00007] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetCachedSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00083] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:57
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00001] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:21
at UnityEditor.Scripting.ScriptCompilation.LoadingAssemblyDefinition.SetAllCustomScriptAssemblyJsonContents (System.String[] paths, System.String[] contents, System.String[] guids) [0x00132] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/LoadingAssemblyDefinition.cs:90
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:LogException(Exception) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:33)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:EmitExceptionsAsErrors(Exception[]) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:42)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:SetAllCustomScriptAssemblyJsonContents(String[], String[], String[]) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:140)

(Filename: /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs Line: 57)
IOException: Permission denied
Rethrow as UnauthorizedAccessException: Access to the path '/opt/unity/Editor/Data/UnityReferenceAssemblies/unity-4.8-api/Facades' is denied.
at System.IO.Enumeration.FileSystemEnumerator`1[TResult].CreateDirectoryHandle (System.String path, System.Boolean ignoreNotFound) [0x00032] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerator`1[TResult]..ctor (System.String directory, System.IO.EnumerationOptions options) [0x00048] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1+DelegateEnumerator[TResult]..ctor (System.IO.Enumeration.FileSystemEnumerable`1[TResult] enumerable) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1[TResult]..ctor (System.String directory, System.IO.Enumeration.FileSystemEnumerable`1+FindTransform[TResult] transform, System.IO.EnumerationOptions options) [0x00042] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles (System.String directory, System.String expression, System.IO.EnumerationOptions options) [0x00014] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.InternalEnumeratePaths (System.String path, System.String searchPattern, System.IO.SearchTarget searchTarget, System.IO.EnumerationOptions options) [0x0003c] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern, System.IO.EnumerationOptions enumerationOptions) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00007] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetCachedSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00083] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:57
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00001] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:21
at UnityEditor.Scripting.ScriptCompilation.LoadingAssemblyDefinition.SetAllCustomScriptAssemblyJsonContents (System.String[] paths, System.String[] contents, System.String[] guids) [0x00132] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/LoadingAssemblyDefinition.cs:90
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:LogException(Exception) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:33)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:EmitExceptionsAsErrors(Exception[]) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:42)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:SetAllCustomScriptAssemblyJsonContents(String[], String[], String[]) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:140)

(Filename: /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs Line: 57)
[ScriptCompilation] Requested script compilation because: InitialRefresh: Force Refresh Recompile flag enabled
[API Updater] Processing imported assemblies took 97 ms (0/0 assembly(ies)).
Assembly Updater Post Process Assets time: 0.113042s
IOException: Permission denied
Rethrow as UnauthorizedAccessException: Access to the path '/opt/unity/Editor/Data/UnityReferenceAssemblies/unity-4.8-api/Facades' is denied.
at System.IO.Enumeration.FileSystemEnumerator`1[TResult].CreateDirectoryHandle (System.String path, System.Boolean ignoreNotFound) [0x00032] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerator`1[TResult]..ctor (System.String directory, System.IO.EnumerationOptions options) [0x00048] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1+DelegateEnumerator[TResult]..ctor (System.IO.Enumeration.FileSystemEnumerable`1[TResult] enumerable) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1[TResult]..ctor (System.String directory, System.IO.Enumeration.FileSystemEnumerable`1+FindTransform[TResult] transform, System.IO.EnumerationOptions options) [0x00042] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles (System.String directory, System.String expression, System.IO.EnumerationOptions options) [0x00014] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.InternalEnumeratePaths (System.String path, System.String searchPattern, System.IO.SearchTarget searchTarget, System.IO.EnumerationOptions options) [0x0003c] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern, System.IO.EnumerationOptions enumerationOptions) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00007] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetCachedSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00083] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:57
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00001] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:21
at UnityEditor.Scripting.ScriptCompilation.LoadingAssemblyDefinition.SetAllCustomScriptAssemblyJsonContents (System.String[] paths, System.String[] contents, System.String[] guids) [0x00132] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/LoadingAssemblyDefinition.cs:90
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:LogException(Exception) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:33)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:EmitExceptionsAsErrors(Exception[]) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:42)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:SetAllCustomScriptAssemblyJsonContents(String[], String[], String[]) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:140)

(Filename: /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs Line: 57)
[ScriptCompilation] Requested script compilation because: Assembly Definition File(s) changed
[ScriptCompilation] Requested script compilation because: Assetdatabase observed changes in script compilation related files
IOException: Permission denied
Rethrow as UnauthorizedAccessException: Access to the path '/opt/unity/Editor/Data/UnityReferenceAssemblies/unity-4.8-api/Facades' is denied.
at System.IO.Enumeration.FileSystemEnumerator`1[TResult].CreateDirectoryHandle (System.String path, System.Boolean ignoreNotFound) [0x00032] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerator`1[TResult]..ctor (System.String directory, System.IO.EnumerationOptions options) [0x00048] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1+DelegateEnumerator[TResult]..ctor (System.IO.Enumeration.FileSystemEnumerable`1[TResult] enumerable) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerable`1[TResult]..ctor (System.String directory, System.IO.Enumeration.FileSystemEnumerable`1+FindTransform[TResult] transform, System.IO.EnumerationOptions options) [0x00042] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles (System.String directory, System.String expression, System.IO.EnumerationOptions options) [0x00014] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.InternalEnumeratePaths (System.String path, System.String searchPattern, System.IO.SearchTarget searchTarget, System.IO.EnumerationOptions options) [0x0003c] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern, System.IO.EnumerationOptions enumerationOptions) [0x00000] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00007] in <75405ec2242e43c49aa0483c7c7d5ed0>:0
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetCachedSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00083] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:57
at UnityEditor.Scripting.ScriptCompilation.MonoLibraryHelpers.GetSystemLibraryReferences (UnityEditor.ApiCompatibilityLevel apiCompatibilityLevel) [0x00001] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs:21
at UnityEditor.Scripting.ScriptCompilation.EditorBuildRules.AddScriptAssemblyReferences (UnityEditor.Scripting.ScriptCompilation.ScriptAssembly& scriptAssembly, UnityEditor.Scripting.ScriptCompilation.TargetAssembly targetAssembly, UnityEditor.Scripting.ScriptCompilation.ScriptAssemblySettings settings, UnityEditor.Scripting.ScriptCompilation.EditorBuildRules+CompilationAssemblies assemblies, System.Collections.Generic.IDictionary`2[TKey,TValue] targetToScriptAssembly, UnityEditor.Scripting.ScriptCompilation.ICompilationSetupWarningTracker warningSink) [0x0036d] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorBuildRules.cs:457
at UnityEditor.Scripting.ScriptCompilation.EditorBuildRules.ToScriptAssemblies (System.Collections.Generic.IDictionary`2[TKey,TValue] targetAssemblies, UnityEditor.Scripting.ScriptCompilation.ScriptAssemblySettings settings, UnityEditor.Scripting.ScriptCompilation.EditorBuildRules+CompilationAssemblies assemblies, UnityEditor.Scripting.ScriptCompilation.ICompilationSetupWarningTracker warningSink, UnityEditor.Scripting.ScriptCompilation.ISafeModeInfo safeModeInfo) [0x002b4] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorBuildRules.cs:298
at UnityEditor.Scripting.ScriptCompilation.EditorBuildRules.GetAllScriptAssemblies (System.Collections.Generic.Dictionary`2[TKey,TValue] allSourceFiles, System.String projectDirectory, UnityEditor.Scripting.ScriptCompilation.ScriptAssemblySettings settings, UnityEditor.Scripting.ScriptCompilation.EditorBuildRules+CompilationAssemblies assemblies, UnityEditor.Scripting.ScriptCompilation.ISafeModeInfo safeModeInfo, UnityEditor.Scripting.ScriptCompilation.TargetAssemblyType onlyIncludeType, System.Func`2[T,TResult] targetAssemblyCondition, UnityEditor.Scripting.ScriptCompilation.ICompilationSetupWarningTracker warningSink) [0x00116] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorBuildRules.cs:191
at UnityEditor.Scripting.ScriptCompilation.EditorCompilation.GetAllScriptAssembliesOfType (UnityEditor.Scripting.ScriptCompilation.ScriptAssemblySettings settings, UnityEditor.Scripting.ScriptCompilation.TargetAssemblyType type, UnityEditor.Scripting.ScriptCompilation.ICompilationSetupWarningTracker warningSink) [0x0009f] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilation.cs:1593
at UnityEditor.Scripting.ScriptCompilation.EditorCompilation.CompileScriptsWithSettings (UnityEditor.Scripting.ScriptCompilation.ScriptAssemblySettings scriptAssemblySettings) [0x00085] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilation.cs:922
at UnityEditor.Scripting.ScriptCompilation.EditorCompilation.CompileScripts (UnityEditor.Scripting.ScriptCompilation.EditorScriptCompilationOptions editorScriptCompilationOptions, UnityEditor.BuildTargetGroup platformGroup, UnityEditor.BuildTarget platform, System.Int32 subtarget, System.String[] extraScriptingDefines) [0x0003a] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilation.cs:791
at UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface+<>c__DisplayClass21_0.b__0 () [0x00000] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:184
at UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface.EmitExceptionAsError[T] (System.Func`1[TResult] func, T returnValue) [0x00002] in /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:49
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:LogException(Exception) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:33)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:EmitExceptionAsError(Func`1, CompileStatus) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:53)
UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:CompileScripts(EditorScriptCompilationOptions, BuildTargetGroup, BuildTarget, Int32, String[]) (at /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:184)

(Filename: /home/bokken/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/MonoLibraryHelpers.cs Line: 57)
```

Start with the unityci/editor:2021.2.0f1-windows-mono-0.15.0 image and the logged path /opt/unity/Editor/Data/UnityReferenceAssemblies/unity-4.8-api/Facades. Trace the failure at MonoLibraryHelpers.cs:57 during compilation and compare it with the working Chocolatey installation. Done means the reported Unity 2021.2.0 CI build completes without UnauthorizedAccessException.

Written by the indexing model from the issue text.