How to reproduce:
1. Open user's attached project ('2019 Drive Test.zip') on a hard drive separate from where Unity is installed
-- observe the console errors

Reproducible with: 2018.4.0f1, 2019.1.0b1, 2019.1.1f1
Not reproducible with: 2019.1.0a14, 2019.2.0a14, 2019.3.0a2
Regression: 2019.1.0a14 -> 2019.1.0b1

Notes:
1. These errors seem to disappear after re-opening the project
2. Before 2019.2.0a13 (at least to 2019.2.0a7), these errors won't disappear with the above fix, however they don't mention any temp files
3. In even earlier 2019.2 versions, different errors regarding temp files are shown, which also disappear after re-opening the project
4. This also seems to be introduced in 2018.3 beta, could not find where

2019.1 errors:
Microsoft (R) Visual C# Compiler version 2.9.1.65535 (9d34608e)
Copyright (C) Microsoft Corporation. All rights reserved.

error CS2011: Error opening response file 'C:\Temp/UnityTempFile-f7a40daca119ce14898360556d697933'
warning CS2008: No source files specified.
error CS1562: Outputs without source must have the /out option specified

Early 2019.2 errors:
Copying assembly from 'Temp/Unity.Analytics.DataPrivacy.dll' to 'Library/ScriptAssemblies/Unity.Analytics.DataPrivacy.dll' failed
Copying assembly from 'Temp/Unity.CollabProxy.Editor.dll' to 'Library/ScriptAssemblies/Unity.CollabProxy.Editor.dll' failed
(Not erased by resetting packages to defaults)