FWIWn on Debian testing running on core i7 + 16 GB RAM, after upgrading 
from 9.3 to 9.4.beta0, ptestlong gives me the same results (one transient 
timeout and two gap-related permanent failures) as before, plus one more 
transient failure on src/sage/graphs/graph.py :

sage -t --long --warn-long 228.8 --random-seed=0 src/sage/graphs/graph.py
**********************************************************************
File "src/sage/graphs/graph.py", line 2713, in 
sage.graphs.graph.Graph.is_edge_transitive
Failed example:
    C.is_edge_transitive()
Exception raised:
    Traceback (most recent call last):
      File 
"/usr/local/sage-9/local/lib/python3.9/site-packages/sage/doctest/forker.py", 
line 714, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File 
"/usr/local/sage-9/local/lib/python3.9/site-packages/sage/doctest/forker.py", 
line 1133, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.graphs.graph.Graph.is_edge_transitive[3]>", line 1, 
in <module>
        C.is_edge_transitive()
      File 
"/usr/local/sage-9/local/lib/python3.9/site-packages/sage/graphs/graph.py", 
line 2731, in is_edge_transitive
        return libgap(A).OrbitLength(e, libgap.OnSets) == self.size()
      File "sage/libs/gap/element.pyx", line 2677, in 
sage.libs.gap.element.GapElement_MethodProxy.__call__ 
(build/cythonized/sage/libs/gap/element.c:20775)
        return GapElement_Function.__call__(self, * ([self.first_argument] + 
list(args)))
      File "sage/libs/gap/element.pyx", line 2525, in 
sage.libs.gap.element.GapElement_Function.__call__ 
(build/cythonized/sage/libs/gap/element.c:19779)
        sig_on()
    sage.libs.gap.util.GAPError: Error, OnSets: <set> must be a set (not a 
immutable non-strictly-sorted plain list of cyclotomics)
**********************************************************************
1 item had failures:
   1 of   9 in sage.graphs.graph.Graph.is_edge_transitive
    [1216 tests, 1 failure, 75.95 s]

However, this is transient :

harpent@zen-book-flip:/usr/local/sage-9$ sage -t --long --warn-long 228.8 
--random-seed=0 src/sage/graphs/graph.py  # 1 doctest failed
Running doctests with ID 2021-05-28-13-24-34-ceab9ba0.
Git branch: develop
Using 
--optional=build,debian,dochtml,dot2tex,fricas,gap_jupyter,gap_packages,kenzo,libsemigroups,pip,pysingular,saclib,sage,sage_spkg,singular_jupyter
Doctesting 1 file.
sage -t --long --warn-long 228.8 --random-seed=0 src/sage/graphs/graph.py
    [1216 tests, 16.62 s]
----------------------------------------------------------------------
All tests passed!
----------------------------------------------------------------------
Total time for all tests: 16.8 seconds
    cpu time: 15.2 seconds
    cumulative wall time: 16.6 seconds
Pytest is not installed, skip checking tests that rely on it.

This error being transient is more cause for questions than for 
reassurance, IMHO…

HTH,
​
Le mercredi 26 mai 2021 à 23:13:19 UTC+2, 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 
>
> 6aa4ecee16 (tag: 9.4.beta0, trac/develop) Updated SageMath version to 
> 9.4.beta0
> 9e7b0bd312 Trac #31567: tox.ini: Add local-macos-nohomebrew environments, 
> deployment targets 10.14, 10.15, 11.1
> 16f52682ae Trac #31838: gfortran: Accept system gfortran 11
> 61b50f85a7 Trac #31581: Do not require base ring of quaternion algebra to 
> be a field
> 068255ca05 Trac #31579: fix various lgtm suggestions
> 46ce983ad7 Trac #31575: Remove full boost package
> 5686795da4 Trac #31573: Improve the Weierstrass sigma function on the 
> formal group of an elliptic curve
> 814efa4100 Trac #31571: Improve interface to plantri
> cc3ff1c94b Trac #31570: iterator for maximal chains in poset
> fdca3596a1 Trac #31562: Patch giac so that libintl from /usr/local does 
> not leak in on macOS
> fcc9af582f Trac #31561: some details in cluster_seed and fqsym
> 9b484245c0 Trac #31547: Creating finite field using strings for modulus 
> does not cache
> a80dc50086 Trac #31452: Problem with solution_dict in solve
> 9203633b9b Trac #31436: Provide alternate layout for the cube graph
> 9addf207d9 Trac #30211: Characteristic Classes: Sequences
> 0d8373f534 Trac #29936: Fix moebius_transform, midpoint and 
> perpendicular_bisector
> 36a68a7a79 Trac #29527: GH Actions: Add docker-opensuse
> 75c60e17c5 Trac #28617: Comparison of Frobenius endomorphism is broken
> cd34206193 Trac #27366: Polyhedron.affine_hull: more output options
> 08a5cf8f42 Trac #25122: Construct RationalPolyhedralFan from possibly 
> overlapping cones
> 12831dd5b0 Trac #21295: recognizable series (a base for k-regular 
> sequences)
> 78b00b0c86 Trac #31808: AA cannot convert real elements from a quadratic 
> field
> 07db8a8b87 Trac #31545: deprecate or remove 
> InfiniteAbstractCombinatorialClass
> 0df543c2a3 Trac #31542: Fix edge multiplicity in multidigraph plot with 
> color_by_label
> a6c66a1d24 Trac #31540: Implement the alternating central extension of the 
> q-Onsager algebra
> 87d5c86cd2 Trac #31532: GH Actions: Restore test for optional/experimental 
> packages on macOS platforms
> aa2223a86e Trac #31517: Make Sage output MathJax3 compatible htmls
> e07c1ef197 Trac #31516: Update arb to 2.19.0
> 7af69c5116 Trac #31514: number_field_elements_from_algebraics with complex 
> embeddings
> f2c8b34947 Trac #31499: Check OpenMP at configuration
> ba189b2319 Trac #31469: Galois groups for finite fields
> 701d36be1e Trac #31427: Improve .dockerignore
> 3d738182cd Trac #31384: cython_aliases: Do not fail if one of the listed 
> libraries is not known to pkgconfig
> 21274d870a Trac #31345: Improve Selmer Group method for number fields
> 1da81a0ac8 Trac #31307: interactive_simplex_method: Add static methods 
> "random_element" to LPDictionary, InteractiveLPProblemStandardForm
> 9665ac4990 Trac #31179: Add package ipympl - Makes interactive features of 
> matplotlib available also in JupyterLab
> 6d05b6bf8c Trac #31108: Relaxed p-adics
> 08eadb587f Trac #31103: sage.numerical.backends: Replace use of TestSuite 
> by pytest
> a2ca61b1ac Trac #30861: Add more homebrew system package information, 
> including packages without spkg-configure.m4
> 3859440591 <(385)%20944-0591> Trac #30551: Drop Python 3.6 support
> dce94e3121 Trac #30311: Immutability of Scalar Fields II
> eed9fe4be8 Trac #30213: tox.ini: Add scientificlinux
> 8cab4cd2e2 Trac #29972: Make stats doctests ready for random seeds
> 05c2ecadc5 Trac #29703: Upgrade gcc to 10.3 (latest 10.x)
> 7ee6218134 Trac #29013: Add configure option --with-sage-venv=SAGE_VENV to 
> create venv there instead of in SAGE_LOCAL
> 89134ebdbc Trac #29009: Error using mpmath (python 3 version)
> b15fe7517b Trac #27957: AG codes and decoders
> b47d2ad084 Trac #26161: Refine polynomial quotient rings to the finite 
> subcategory on initialization
> 5919b40d0a Trac #23940: implement proper black-box discrete logarithm for 
> AdditiveAbelianGroupWrapper
> 7f610a53c0 Trac #21295: recognizable series (a base for k-regular 
> sequences)
> 9bdf65da5d Trac #20165: Speedup CrystalOfLSPaths
> d2a0b73c1d Trac #18863: Subgroup doesn't work with number field unit group
> c8258dbf7e Trac #18272: unset MACOSX_DEPLOYMENT_TARGET, rather than 
> sometimes setting a bogus value
> 2a3f0073b9 Trac #15216: Parking functions reject their offspring
> 337d941a2f Trac #13111: variable camera position, light, etc. for tachyon 
> ray tracer
> 9a0dfef090 Trac #10928: Test that getitem of numpy matrix using Sage 
> integers works
> 2cf65a584d Trac #31556: Update libgd to 2.3.2
> bab8d46b84 Trac #31069: Upgrade: Flint 2.7.1
> 1c01281a1e Trac #30913: sagelib: Generate pyproject.toml and setup.cfg 
> [install_requires], requirements.txt, Pipfile, and src/Pipfile
> c21d3c6a1c Trac #31756: regression: conversion of Mathematica's Sqrt to 
> Sage fails
> d6c5cd9be7 (tag: 9.3, trac/master) Updated SageMath version to 9.3
>
>

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