How to reproduce:
1. Extract the attached project ('BugReport.zip')
2. Open the Terminal and run the following command: sudo "Unity path" -projectPath "Project path"
3. Open the Test Runner window (Window -> General -> Test Runner)
4. While in EditMode press 'Run All'

Reproducible with: 2019.4.25f1, 2020.3.6f1, 2021.1.5f1, 2021.2.0a15
Could not test with: 2018.4.35f1 (doesn't crash but doesn't generate the results file)

First lines of the stack trace:
0x007fff2080f552 in _platform_strlen
0x0000010786a7bf in systeminfo::GetTemporaryCachePath()
0x000001041eb10f in GetTemporaryCachePathApplicationSpecific()
0x0000010508d656 in Application_Get_Custom_PropTemporaryCachePath()

Notes:
- issue doesn't reproduce when running the command without sudo (using 2019.4, 2020.3, 2021.1), however, 2021.2.0a15 crashes with or without sudo
- 2021.2.0a15 crashes with a different stack trace, so it might be a different issue
- The crash doesn't occur when using any Unity version on Windows
- Not reproducible using Application.persistentDataPath 2019.4, 2020.3, 2021.1 but reproducible 2021.2.0a15