New comment by dkwo on void-packages repository https://github.com/void-linux/void-packages/pull/34030#issuecomment-1005538497 Comment: With that particular seed, I can only reprodice one of the two failures: ``` $ sage-9.5.beta9_1 -t --warn-long 5.0 --random-seed=152811365814192554661782902878649203456 /usr/lib/sage-9.5.beta9/src/sage/quadratic_forms/binary_qf.py Running doctests with ID 2022-01-05-10-53-26-6839f337. Using --optional=pip,sage Features to be detected: 4ti2,benzene,bliss,buckygen,conway_polynomials,csdp,database_cremona_ellcurve,database_cremona_mini_ellcurve,database_jones_numfield,database_knotinfo,dvipng,ffmpeg,graphviz,imagemagick,jupymake,kenzo,latte_int,lrslib,mcqd,meataxe,pandoc,pdf2svg,plantri,pynormaliz,rubiks,sage.combinat,sage.geometry.polyhedron,sage.graphs,sage.plot,sage.rings.number_field,sage.rings.real_double,sage.symbolic,sage_numerical_backends_coin,tdlib Doctesting 1 file. sage -t --warn-long 5.0 --random-seed=152811365814192554661782902878649203456 /usr/lib/sage-9.5.beta9/src/sage/quadratic_forms/binary_qf.py ********************************************************************** File "/usr/lib/sage-9.5.beta9/src/sage/quadratic_forms/binary_qf.py", line 1498, in sage.quadratic_forms.binary_qf.BinaryQF.solve_integer Failed example: xy is None or Q(*xy) == 0 Expected: True Got: False ********************************************************************** 1 item had failures: 1 of 12 in sage.quadratic_forms.binary_qf.BinaryQF.solve_integer [282 tests, 1 failure, 0.59 s] ---------------------------------------------------------------------- sage -t --warn-long 5.0 --random-seed=152811365814192554661782902878649203456 /usr/lib/sage-9.5.beta9/src/sage/quadratic_forms/binary_qf.py # 1 doctest failed ---------------------------------------------------------------------- Total time for all tests: 0.7 seconds cpu time: 0.6 seconds cumulative wall time: 0.6 seconds Features detected for doctesting: ``` which indeed seems related to the ticked you mention.