New comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/42048#issuecomment-1414588622

Comment:
So `x86_64` (both glibc and musl) failed with this:
```
sage -t --warn-long 30.0 --random-seed=0 /builddir/sagemath-9.7/pkgs/sagemath-standard/build/lib.linux-x86_64-cpython-311/sage/interfaces/expect.py
**********************************************************************
File "/builddir/sagemath-9.7/pkgs/sagemath-standard/build/lib.linux-x86_64-cpython-311/sage/interfaces/expect.py", line 937, in sage.interfaces.expect.Expect._eval_line
Failed example:
    singular.interrupt()
Expected:
    True
Got:
    False
**********************************************************************
File "/builddir/sagemath-9.7/pkgs/sagemath-standard/build/lib.linux-x86_64-cpython-311/sage/interfaces/expect.py", line 943, in sage.interfaces.expect.Expect._eval_line
Failed example:
    singular('2+3')
Expected:
    Singular crashed -- automatically restarting.
    5
Got:
    5
**********************************************************************
1 item had failures:
   2 of  16 in sage.interfaces.expect.Expect._eval_line
    [101 tests, 2 failures, 23.40 s]
```

It has already happened before (https://github.com/void-linux/void-packages/pull/39876#issuecomment-1274649461, https://github.com/void-linux/void-packages/pull/41085#issuecomment-1351712588).

This was already known upstream (https://trac.sagemath.org/ticket/33907) and it turns out I already fixed this (it's even merged upstream for 9.8!) but I forgot. This only happens under very heavy load (as here in CI, but not in my box even if I run 16 threads on 8 cores, it has to be way more loaded to trigger)

I'll push a new PR with the patch from https://git.sagemath.org/sage.git/commit?id=6f5c1c2fc8bcfb5e6555716d05ce70511795ffa1.

Meanwhile my local tests with all the above PR together are successful.