New comment by tornaria on void-packages repository https://github.com/void-linux/void-packages/pull/34030#issuecomment-1005066334 Comment: > Very well, great work. On my musl build (inside the chroot, so old musl) these two failed: > > ``` > sage -t --warn-long 5.0 --random-seed=152811365814192554661782902878649203456 src/sage/matrix/matrix_mod2_dense.pyx # 1 doctest failed > ``` Please post the details. > ``` > sage -t --warn-long 5.0 --random-seed=152811365814192554661782902878649203456 src/sage/quadratic_forms/binary_qf.py # 1 doctest failed > ``` Can you confirm is the same as this: https://trac.sagemath.org/ticket/33057 > > Somehow in ci they don't fail, though > > ``` > 2022-01-03T22:05:39.2997090Z sage -t --warn-long 5.0 --random-seed=262463563747542995961554231591031840987 src/sage/matrix/matrix_mod2_dense.pxd > 2022-01-03T22:05:39.2997845Z [0 tests, 0.00 s] > ``` Can you try again with the same random-seed as above to see if it always fails on the same input?