Bug#1102309: sbcl: FTBFS: flaky tests

[Santiago Vila <sanvila@debian.org>]

Hello.

This issue seems fixed as of version 2.5.8-1.

However, it is still an issue in trixie. Before closing the bug: Would
you please help me to determine how exactly it was fixed? I'd like to
see a fix in trixie, even if that means taking care of the related
release.debian.org bureaucracy myself.

I explained the way to reproduce it in the initial bug report, and, as
always, I can offer a VM to reproduce if the information I provided
was not enough.

Thanks.