Since https://trac.sagemath.org/ticket/28459
Sage can use GLPK from the system, if it's version 4.63 or newer. Sage has 4.65.
The slight discrepancy in GLPK tests is due to this version
difference, and it's harmless.
(I set it to 4.63 to cover many more Linux distros)

On Wed, Nov 27, 2019 at 9:28 PM Emmanuel Charpentier
<emanuel.charpent...@gmail.com> wrote:
>
> THIS WAS A MISTAKE: those resuts are for 9.0.beta6, not beta7. Rebuilding 
> beta7 and tests underway...
>
> Sorry for the noise...
>
> Le mercredi 27 novembre 2019 22:07:14 UTC+1, Emmanuel Charpentier a écrit :
>>
>> I tried to recompile from scratch (i. e. make distclean ; make ; 
>> resinsttalling the same optional packages (+ python2) and R packages, then 
>> make ptestalllong). This time, I got five transient failures and three 
>> permanent failures, none of them due to a crash :
>>
>> | File                                         | Result            | P/T |
>> |----------------------------------------------+-------------------+-----|
>> | src/sage/combinat/posets/posets.py           | 1 doctest failed  | T   |
>> | src/sage/plot/animate.py                     | 7 doctests failed | T   |
>> | src/sage/modular/ssmod/ssmod.py              | 2 doctests failed | T   |
>> | src/sage/numerical/backends/glpk_backend.pyx | 1 doctest failed  | P   |
>> | src/sage/tests/gap_packages.py               | 1 doctest failed  | P   |
>> | src/sage/libs/glpk/error.pyx                 | 1 doctest failed  | P   |
>> | src/sage/misc/latex.py                       | 1 doctest failed  | T   |
>> | src/sage/graphs/graph_latex.py               | 2 doctests failed | T   |
>>
>> The temporary failures have been reported already (except possibly for 
>> ssmod). Details of the permanent failures :
>>
>> glpk_backend.py:
>>
>>
>> Running doctests with ID 2019-11-27-21-45-09-4e9dc047.
>> Git branch: develop
>> Using 
>> --optional=build,dochtml,dot2tex,fricas,gap_packages,giacpy_sage,libsemigroups,memlimit,python2,sage,sagenb
>> Doctesting 1 file.
>> sage -t --long --warn-long 162.8 src/sage/numerical/backends/glpk_backend.pyx
>> **********************************************************************
>> File "src/sage/numerical/backends/glpk_backend.pyx", line 2287, in 
>> sage.numerical.backends.glpk_backend.GLPKBackend.print_ranges
>> Failed example:
>>     p.print_ranges()
>> Expected:
>>     glp_print_ranges: optimal basic solution required
>>     1
>> Got:
>>     1
>> **********************************************************************
>> 1 item had failures:
>>    1 of  13 in sage.numerical.backends.glpk_backend.GLPKBackend.print_ranges
>>     [554 tests, 1 failure, 3.88 s]
>> ----------------------------------------------------------------------
>> sage -t --long --warn-long 162.8 
>> src/sage/numerical/backends/glpk_backend.pyx  # 1 doctest failed
>> ----------------------------------------------------------------------
>> Total time for all tests: 4.0 seconds
>>     cpu time: 3.9 seconds
>>     cumulative wall time: 3.9 seconds
>>
>> gap_packages:
>>
>>
>> Running doctests with ID 2019-11-27-21-45-16-07798fcc.
>> Git branch: develop
>> Using 
>> --optional=build,dochtml,dot2tex,fricas,gap_packages,giacpy_sage,libsemigroups,memlimit,python2,sage,sagenb
>> Doctesting 1 file.
>> sage -t --long --warn-long 162.8 src/sage/tests/gap_packages.py
>> **********************************************************************
>> File "src/sage/tests/gap_packages.py", line 8, in sage.tests.gap_packages
>> Failed example:
>>     test_packages(pkgs, only_failures=True)    # optional - gap_packages
>> Expected:
>>       Status   Package   GAP Output
>>     +--------+---------+------------+
>> Got:
>>     #I  method installed for Matrix matches more than one declaration
>>       Status   Package   GAP Output
>>     +--------+---------+------------+
>> **********************************************************************
>> 1 item had failures:
>>    1 of   5 in sage.tests.gap_packages
>>     [11 tests, 1 failure, 3.82 s]
>> ----------------------------------------------------------------------
>> sage -t --long --warn-long 162.8 src/sage/tests/gap_packages.py  # 1 doctest 
>> failed
>> ----------------------------------------------------------------------
>> Total time for all tests: 3.9 seconds
>>     cpu time: 3.2 seconds
>>     cumulative wall time: 3.8 seconds
>>
>> error.pyx:
>>
>>
>> Running doctests with ID 2019-11-27-21-45-23-f1e208db.
>> Git branch: develop
>> Using 
>> --optional=build,dochtml,dot2tex,fricas,gap_packages,giacpy_sage,libsemigroups,memlimit,python2,sage,sagenb
>> Doctesting 1 file.
>> sage -t --long --warn-long 162.8 src/sage/libs/glpk/error.pyx
>> **********************************************************************
>> File "src/sage/libs/glpk/error.pyx", line 100, in 
>> sage.libs.glpk.error.setup_glpk_error_handler
>> Failed example:
>>     res = p.solve()
>> Expected:
>>           0: obj = ...
>> Got:
>>     <BLANKLINE>
>> **********************************************************************
>> 1 item had failures:
>>    1 of  11 in sage.libs.glpk.error.setup_glpk_error_handler
>>     [12 tests, 1 failure, 0.90 s]
>> ----------------------------------------------------------------------
>> sage -t --long --warn-long 162.8 src/sage/libs/glpk/error.pyx  # 1 doctest 
>> failed
>> ----------------------------------------------------------------------
>> Total time for all tests: 0.9 seconds
>>     cpu time: 0.5 seconds
>>     cumulative wall time: 0.9 seconds
>>
>> The gap_packages failure is known already ; those pertinent to GLPK are new, 
>> AFAICT. They might be cosmetic.
>>
>> HTH,
>>
>>
>> Le mercredi 27 novembre 2019 15:11:18 UTC+1, Emmanuel Charpentier a écrit :
>>>
>>> Similar results on Debian testing running on core I7 + 16 GB RAM and a 
>>> slightly different set of optional packages:
>>>
>>> | File                                                     | Result         
>>>                   | P/T |
>>> |----------------------------------------------------------+----------------------------------+-----|
>>> | src/sage/crypto/mq/sr.py                                 | Killed due to 
>>> abort              | P   |
>>> | src/sage/rings/polynomial/multi_polynomial_sequence.py   | Killed due to 
>>> segmentation fault | P   |
>>> | src/sage/combinat/posets/posets.py                       | 1 doctest 
>>> failed                 | T   |
>>> | src/sage/graphs/generators/smallgraphs.py                | 6 doctests 
>>> failed                | T   |
>>> | src/sage/plot/animate.py                                 | 7 doctests 
>>> failed                | T   |
>>> | src/sage/combinat/matrices/hadamard_matrix.py            | 2 doctests 
>>> failed                | T   |
>>> | src/sage/rings/polynomial/pbori.pyx                      | Killed due to 
>>> abort              | P   |
>>> | src/sage/coding/databases.py                             | 2 doctests 
>>> failed                | T   |
>>> | src/sage/misc/latex.py                                   | 1 doctest 
>>> failed                 | T   |
>>> | src/sage/misc/persist.pyx                                | 2 doctests 
>>> failed                | T   |
>>> | src/sage/tests/gap_packages.py                           | 1 doctest 
>>> failed                 | P   |
>>> | src/sage/symbolic/integration/external.py                | 1 doctest 
>>> failed                 | T   |
>>> | src/sage/repl/load.py                                    | 1 doctest 
>>> failed                 | T   |
>>> | src/sage/graphs/graph_latex.py                           | 2 doctests 
>>> failed                | T   |
>>> | src/sage/rings/polynomial/polynomial_ring_constructor.py | Killed due to 
>>> abort              | P   |
>>> | src/doc/en/reference/sat/index.rst                       | Killed due to 
>>> abort              | P   |
>>> | src/sage/sat/solvers/dimacs.py                           | Killed due to 
>>> abort              | P   |
>>> | src/sage/sat/boolean_polynomials.py                      | Killed due to 
>>> abort              | P   |
>>> | src/sage/misc/remote_file.py                             | 2 doctests 
>>> failed                | T   |
>>> | src/sage/databases/findstat.py                           | 29 doctests 
>>> failed               | T   |
>>> | src/sage/interfaces/magma_free.py                        | 2 doctests 
>>> failed                | T   |
>>>
>>> Details: see enclosed checkerrs2.txt
>>>
>>> HTH,
>>>
>>>
>>> Le mercredi 27 novembre 2019 14:56:36 UTC+1, Emmanuel Charpentier a écrit :
>>>>
>>>> Doubleplusungood...
>>>>
>>>> On Deboan testing running on core i5 + 8 GB RAM, ptestalllong gets me 
>>>> (part of) the usual suspects (transient failures, plus 6 (six) permanent 
>>>> failures due to abort:
>>>>
>>>> | File                                                     | Result        
>>>>       | P/T |
>>>> |----------------------------------------------------------+---------------------+-----|
>>>> | src/sage/crypto/mq/sr.py                                 | Killed due to 
>>>> abort | P   |
>>>> | src/sage/rings/polynomial/multi_polynomial_sequence.py   | Killed due to 
>>>> abort | P   |
>>>> | src/sage/combinat/posets/posets.py                       | 1 doctest 
>>>> failed    | T   |
>>>> | src/sage/plot/animate.py                                 | 7 doctests 
>>>> failed   | T   |
>>>> | src/sage/combinat/matrices/hadamard_matrix.py            | 2 doctests 
>>>> failed   | T   |
>>>> | src/sage/rings/polynomial/pbori.pyx                      | Killed due to 
>>>> abort | P   |
>>>> | src/sage/misc/latex.py                                   | 1 doctest 
>>>> failed    | T   |
>>>> | src/sage/coding/databases.py                             | 2 doctests 
>>>> failed   | T   |
>>>> | src/sage/misc/persist.pyx                                | 2 doctests 
>>>> failed   | T   |
>>>> | src/sage/repl/load.py                                    | 1 doctest 
>>>> failed    | T   |
>>>> | src/sage/graphs/graph_latex.py                           | 2 doctests 
>>>> failed   | T   |
>>>> | src/sage/rings/polynomial/polynomial_ring_constructor.py | Killed due to 
>>>> abort | P   |
>>>> | src/sage/sat/solvers/dimacs.py                           | Killed due to 
>>>> abort | P   |
>>>> | src/doc/en/reference/sat/index.rst                       | Killed due to 
>>>> abort | P   |
>>>> | src/sage/sat/boolean_polynomials.py                      | Killed due to 
>>>> abort | P   |
>>>> | src/sage/misc/remote_file.py                             | 2 doctests 
>>>> failed   | T   |
>>>> | src/sage/databases/findstat.py                           | 7 doctests 
>>>> failed   | T   |
>>>> | src/sage/interfaces/magma_free.py                        | 2 doctests 
>>>> failed   | T   |
>>>>
>>>> Details : see the enclose checkerrs.txt
>>>>
>>>> HTH,
>>>>
>>>> Le mercredi 27 novembre 2019 01:28:33 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
>>>>>
>>>>>
>>>>> d48a21c149 (tag: 9.0.beta7, trac/develop) Updated SageMath version to 
>>>>> 9.0.beta7
>>>>> 22426a509b Trac #28797: 32-bit Python 3 failures in combinat
>>>>> 54072f6c3b Trac #28795: Python 3 overflow in IntegerModRing pow
>>>>> 7f2572fcdf Trac #28685: Upgrade from beautifulsoup to beautifulsoup4
>>>>> c597ceea70 Trac #28737: remove deprecated stuff in old coercion model
>>>>> a5c1185e7c Trac #28736: fix Texture for negative inputs
>>>>> 6c66325a63 Trac #28698: py3: HTML documentation for GlobalOptions does 
>>>>> not show up correctly
>>>>> aa0ac42b16 Trac #28675: Deprecate GraphicsArray import from 
>>>>> sage.plot.graphics
>>>>> 5882b7f376 Trac #28564: Tensor Fields and Sections: Naming Consistencies
>>>>> 8f9b67d25c Trac #28304: add type information to _repr_ of Macaulay2 
>>>>> elements
>>>>> e6e616380a Trac #28214: Compute and display graph of nth-preimage tree
>>>>> a5bb40f91c Trac #27838: 5 internet doctests failing in findstat.py
>>>>> 6553536757 Trac #27790: compatibility with cplex 12.9
>>>>> 3c6a9108c1 Trac #23816: implement left action of matrices on scheme points
>>>>> 9c6f3dab7f Trac #28732: update sagetex to version 3.4
>>>>> f856552b81 Trac #28748: Python 3 debug build fails to start
>>>>> 232ae1bddc (tag: 9.0.beta6) Updated SageMath version to 9.0.beta6
>>>>>
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