Failing piuparts on TPA runners

Description

Cannot run piuparts on TPA runners.

Minimum Reproducible Example

The piupartisan repository contains a mininum example showing that:

• piuparts can run successfully in a non-TPA runner.
• it fails to run in a TPA runner.

Downstream bug

This problem was originally reported at tpo/onion-services/onionprobe#94 (closed)