AssertionError in test_pytest_memray.py

The test fails for some unknown reason, although all dependencies are present and /dev/kvm and /proc are mounted. The build is performed in an isolated hasher environment without network access

I attach the build log

[buildlog.txt](https://github.com/user-attachments/files/20984545/buildlog.txt)

Start by reading test_pytest_memray.py and the attached build log to locate the failing assertion and its actual error context. Reproduce the failure in the isolated hasher environment with no network access, keeping the stated /dev/kvm and /proc mounts in place. Done means the cause is identified and the test passes in that environment.

Written by the indexing model from the issue text.