Instead of modifying the .gitattributes file, you could try adding it to 
.git/info/attributes which is local to your repository.

[email protected] schrieb am Samstag, 12. Februar 2022 um 01:37:40 UTC+1:

> Something that has come up a few times when doing these upgrades for me 
> has been line endings causing git to think a file has changed which makes 
> merging things cleaning a major PITA. I believe this is caused by #31306, 
> and what I have to do is add this line to .gitattributes
>
> *.png binary
>
> and bring that with me (i.e., not doing a commit) as I merge in develop to 
> my local branches (rebasing is even harder because I have to actually make 
> it a commit and then revert it).
>
> I tried changing the auto crlf option, but that did not get me anywhere. I 
> don't know if anything can be done about this, but it would be nice if 
> there was something.
>
> Best,
> Travis
>
> On Wednesday, February 9, 2022 at 10:04:34 PM UTC+9 [email protected] 
> wrote:
>
>> On Debian testing running on core i5 + 8 GB RAM, upgrading 9.5 to 
>> 9.6.beta0 and running ptestlong gets me three permanent failures.
>>
>> Already reported :
>>
>> sage -t --long --warn-long 71.7 
>> --random-seed=230319547821274793169446791358036431034 
>> src/sage/algebras/quantum_groups/quantum_group_gap.py  # 1 doctest failed
>> sage -t --long --warn-long 71.7 
>> --random-seed=230319547821274793169446791358036431034 
>> src/sage/functions/min_max.py  # 2 doctests failed
>>
>> New (with rerun) :
>>
>> charpent@p-202-021:/usr/local/sage-9$ sage -t --long --warn-long 71.7 
>> --random-seed=230319547821274793169446791358036431034 
>> src/sage/schemes/toric/sheaf/klyachko.py  # 1 doctest failed
>> Running doctests with ID 2022-02-09-13-57-32-1e45e852.
>> Git branch: develop
>> Using 
>> --optional=debian,debugpy,dot2tex,fricas,gap_packages,libsemigroups,pip,sage,sage_spkg
>> Features to be detected: 
>> 4ti2,benzene,bliss,buckygen,conway_polynomials,csdp,database_cremona_ellcurve,database_cremona_mini_ellcurve,database_jones_numfield,database_knotinfo,dvipng,graphviz,imagemagick,jupymake,kenzo,latte_int,lrslib,mcqd,meataxe,pandoc,pdf2svg,plantri,pynormaliz,python_igraph,rubiks,sage.combinat,sage.geometry.polyhedron,sage.graphs,sage.groups,sage.plot,sage.rings.number_field,sage.rings.padics,sage.rings.real_double,sage.symbolic,sage_numerical_backends_coin,sagemath_doc_html,sphinx,tdlib
>> Doctesting 1 file.
>> sage -t --long --warn-long 71.7 
>> --random-seed=230319547821274793169446791358036431034 
>> src/sage/schemes/toric/sheaf/klyachko.py
>> **********************************************************************
>> File "src/sage/schemes/toric/sheaf/klyachko.py", line 950, in 
>> sage.schemes.toric.sheaf.klyachko.KlyachkoBundle_class.random_deformation
>> Failed example:
>>     Vtilde.cohomology(dim=True, weight=(0,))
>> Expected:
>>     (1, 0)
>> Got:
>>     (0, 0)
>> **********************************************************************
>> 1 item had failures:
>>    1 of   7 in 
>> sage.schemes.toric.sheaf.klyachko.KlyachkoBundle_class.random_deformation
>>     [151 tests, 1 failure, 8.10 s]
>> ----------------------------------------------------------------------
>> sage -t --long --warn-long 71.7 
>> --random-seed=230319547821274793169446791358036431034 
>> src/sage/schemes/toric/sheaf/klyachko.py  # 1 doctest failed
>> ----------------------------------------------------------------------
>> Total time for all tests: 8.2 seconds
>>     cpu time: 7.7 seconds
>>     cumulative wall time: 8.1 seconds
>> Features detected for doctesting: 
>> Pytest is not installed, skip checking tests that rely on it.
>>
>> HTH,
>> ​
>> Le dimanche 6 février 2022 à 20:14:02 UTC+1, Volker Braun a écrit :
>>
>>> As always, you can get the latest beta version from the "develop" git 
>>> branch. Alternatively, the self-contained source tarball is at 
>>> http://www.sagemath.org/download-latest.html
>>>
>>> There is a new random failure that I spent a lot of time unsuccessfully 
>>> to isolate, currently I can't reproduce it with this release but if you 
>>> observe it please report. It might be related to the cython update, not 
>>> sure:
>>>
>>> File "src/sage/schemes/cyclic_covers/cycliccover_finite_field.py", line 
>>> 1138, in 
>>> sage.schemes.cyclic_covers.cycliccover_finite_field.CyclicCover_finite_field.frobenius_polynomial
>>> Failed example:
>>>     CyclicCover(11, PolynomialRing(GF(1129), 'x')([-1] + [0]*(5-1) + 
>>> [1])).frobenius_polynomial() # long time
>>> Exception raised:
>>>     Traceback (most recent call last):
>>>       File "sage/misc/cachefunc.pyx", line 1943, in 
>>> sage.misc.cachefunc.CachedMethodCaller.__call__ 
>>> (build/cythonized/sage/misc/cachefunc.c:10410)
>>>         return cache[k]
>>>     KeyError: ((11,), ())
>>>     During handling of the above exception, another exception occurred:
>>>     Traceback (most recent call last):
>>>       File 
>>> "/Users/buildbot-sage/worker/sage_git/build/local/var/lib/sage/venv-python3.9.9/lib/python3.9/site-packages/sage/doctest/forker.py",
>>>  
>>> line 694, in _run
>>>         self.compile_and_execute(example, compiler, test.globs)
>>>       File 
>>> "/Users/buildbot-sage/worker/sage_git/build/local/var/lib/sage/venv-python3.9.9/lib/python3.9/site-packages/sage/doctest/forker.py",
>>>  
>>> line 1088, in compile_and_execute
>>>         exec(compiled, globs)
>>>       File "<doctest 
>>> sage.schemes.cyclic_covers.cycliccover_finite_field.CyclicCover_finite_field.frobenius_polynomial[23]>",
>>>  
>>> line 1, in <module>
>>>         CyclicCover(Integer(11), PolynomialRing(GF(Integer(1129)), 
>>> 'x')([-Integer(1)] + [Integer(0)]*(Integer(5)-Integer(1)) + 
>>> [Integer(1)])).frobenius_polynomial() # long time
>>>       File "sage/misc/cachefunc.pyx", line 2310, in 
>>> sage.misc.cachefunc.CachedMethodCallerNoArgs.__call__ 
>>> (build/cythonized/sage/misc/cachefunc.c:13020)
>>>         self.cache = f(self._instance)
>>>       File 
>>> "/Users/buildbot-sage/worker/sage_git/build/local/var/lib/sage/venv-python3.9.9/lib/python3.9/site-packages/sage/schemes/cyclic_covers/cycliccover_finite_field.py",
>>>  
>>> line 1233, in frobenius_polynomial
>>>         F = self.frobenius_matrix(self._N0)
>>>       File "sage/misc/cachefunc.pyx", line 1948, in 
>>> sage.misc.cachefunc.CachedMethodCaller.__call__ 
>>> (build/cythonized/sage/misc/cachefunc.c:10546)
>>>         w = self._instance_call(*args, **kwds)
>>>       File "sage/misc/cachefunc.pyx", line 1824, in 
>>> sage.misc.cachefunc.CachedMethodCaller._instance_call 
>>> (build/cythonized/sage/misc/cachefunc.c:10012)
>>>
>>>
>>> The following tickets were merged:
>>>
>>> 226937dfa9 (HEAD -> develop, tag: 9.6.beta0, trac/develop) Updated 
>>> SageMath version to 9.6.beta0
>>> f0df3d8b40 (origin/develop) Trac #32985: cython: Update to 0.29.25
>>> 3984fd1484 Trac #32984: fix _row_ambient_module/_column_ambient_module 
>>> and make them public
>>> 721769c1cf Trac #32979: minor details in combinat
>>> 71337f9807 Trac #32978: fix usage of underscore in combinat loops
>>> 4e5971f12b Trac #32970: fix parent of 0th Bernoulli polynomial
>>> 2d74bd412d Trac #32968: Update sphinx to 4.3
>>> 50d9be9690 Trac #32891: Unstable doctest 
>>> geometry/hyperbolic_space/hyperbolic_model.py
>>> 65aef17f4d Trac #32890: Unstable doctest in hmm/chmm.pyx
>>> 41d49e33d5 Trac #32888: Feature for sage.groups
>>> dcce1d6f5e Trac #32881: Feature for sage.rings.padics
>>> b36016a2fb Trac #32877: Remove superfluous set_random_seed() calls
>>> c85d2304d9 Trac #32873: sage.features, sage_setup: Replace use of 
>>> distutils.errors by setuptools
>>> 86d4d9702f Trac #32856: Get rid of "# optional - build"
>>> 6008371eba Trac #32846: sage.geometry: More # optional
>>> ea39266e7e Trac #32802: Clean the use of weights in graph.py
>>> 9b45db5d82 Trac #32798: Clean the use of weights in generic_graph.py - 
>>> part 1
>>> 06f45f2916 Trac #32726: quaternion ideals' .scale() incorrectly copies 
>>> cached left and right orders
>>> 468797ca2d Trac #32683: LP Bounds for Johnson Scheme, Q-Polynomial 
>>> Association Schemes
>>> ac5c815531 Trac #32553: Fix coefficient method for modular forms
>>> 593b6ae930 Trac #32510: Update igraph to 0.9.5 and python_igraph to 0.9.8
>>> d4abc0a852 Trac #32451: asymptotic expansions: improve 
>>> compare_with_values(), including support for interval coefficients
>>> 742c77c14b Trac #32252: fix colours of tiles in TilingSolver
>>> 971737e7d5 Trac #31787: Alternative parameters for generating a 
>>> k-regular sequence from recurrence relations
>>> 648007030e Trac #31424: wrong result for bool(a <= b)
>>> ddf44d8b49 Trac #31306: sage.repl: Replace use of SAGE_EXTCODE by 
>>> importlib.resources
>>> d04fbee6cb Trac #31299: Chu-Vandermonde simplification fails
>>> 3abe1a7938 Trac #31013: Remove unused class from sage_setup.optional 
>>> extension
>>> 464f81e388 Trac #30362: Add symplectic structures
>>> 25080fa1b3 Trac #29865: Modularization of sagelib: Break out separate 
>>> packages sagemath-objects, sagemath-categories
>>> 7483aad48a Trac #25633: Speed up SBox module
>>> 494fbe35fc Trac #21325: k-regular sequences: subsequences, 
>>> forward/backward difference, partial sums
>>> 3b35941b3b Trac #33189: Make tests pass with arb 2.22
>>> 201888456d Trac #33173: Off-by-one error in CFiniteSequence slices
>>> 2e10636c98 Trac #33131: Installation manual: Add decision tree, remove 
>>> mention of Sage-mirror-hosted binary distributions
>>> 6f5f31e10e Trac #33101: lrslib: fix doctest in game_theory/parser.py
>>> b8c7f43ec6 Trac #33077: pari-jupyter: Reinstate
>>> 0222526fb8 Trac #8450: intermediate complex expression in real functions 
>>> make many plot functions fail
>>> 439907fd9a (tag: 9.5, trac/master, origin/master, origin/HEAD) Updated 
>>> SageMath version to 9.5
>>>
>>

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