FWIW, after some recent update of Debian testing, I had to upgrade, since the sage command started to fail with a message amounting to Python being unable to find the sage module, IIRC.
On Debian testing running on core i7 + 16 GB RAM, a “normal” upgrade (fetch from upstream; bootstrap, make reconfigure, make, make ptestlong) results in
---------------------------------------------------------------------- sage -t --long --warn-long 242.1 --random-seed=14644589637905067701276009881541248205 src/sage/rings/real_mpfr.pyx # 1 doctest failed ----------------------------------------------------------------------already reported for a couple of betas (a warning mistaken for an error in mpfr).
HTH,