Consistently getting a test failure on Cygwin related to some oddity in GAP:

sage -t --long --warn-long 109.3 src/sage/tests/
File "src/sage/tests/", line 535, in
Failed example:
    "you can 'quit;' to quit to outer loop, or\nyou can 'return;' to continue\n"
File "src/sage/tests/", line 537, in
Failed example:
    err.replace('gap: halving pool size.', '').strip()
    'Error, <str> must not contain \'\\\' or \':\' at
/home/embray/src/sagemath/sage/local/share/gap/lib/ called
from\nfunc( C[i] ) at
/home/embray/src/sagemath/sage/local/share/gap/lib/ called
from\nList( GAPInfo.DirectoriesSystemPrograms, Directory \n ) at
/home/embray/src/sagemath/sage/local/share/gap/lib/ called
from\n<function "DirectoriesSystemPrograms">( <arguments> )\n called
from read-eval loop at
1 item had failures:
   2 of 251 in sage.tests.cmdline.test_executable
    [250 tests, 2 failures, 273.09 s]
sage -t --long --warn-long 109.3 src/sage/tests/  # 2 doctests failed

Can't be sure yet that it isn't just a weird, localized issue in my
installation.  Will investigate.

On Tue, Sep 3, 2019 at 1:22 AM Volker Braun <> wrote:
> As always, you can get the latest beta version from the "develop" git branch. 
> Alternatively, the self-contained source tarball is at 
> bdf4b23d74 (trac/develop, tag: 8.9.beta9) Updated SageMath version to 
> 8.9.beta9
> c631202c12 Trac #28411: refresh the prompt in the installation guide
> 45482b13f0 Trac #28387: Implement function that returns the balanced digit 
> representation of an integer
> 4454ffec0d Trac #28384: py2: UnicodeDecodeError in doctest framework 
> exception handling
> 0c8192c3de Trac #28366: Lattice precision timing test fails on Windows 7 due 
> to low-ish clock resolution
> 5e1b351a89 Trac #28274: EnumeratedFamily should use integers as keys
> ec9715bb88 Trac #28172: Profile of a Finite Permutation Group
> dcf58df8b5 Trac #28154: SciPy: patch for missing coding lines in some source 
> files
> 82d75fd335 Trac #27917: Standardize doctest headers
> 04d5aab185 Trac #25817: RuntimeError: Encountered operator mismatch in 
> maxima-to-sr translation, integrate
> 45314bcbcf Trac #23639: Strange errors with roots() of polynomials over 
> polynomial rings
> f29cee985f Trac #28419: new pyflakes miscellanous cleanup
> 77bddf472a Trac #28417: removed deprecated stuff in integer_mod
> c565a3aa0a Trac #28412: upgrade Pynac to 0.7.26
> 2e47b34ab8 Trac #28408: fixing a few invalid escape sequences
> 877d26294b Trac #28407: py3: fix quantum_group_gap and graph_latex
> 3db8be3dc0 Trac #28399: remove deprecated things in integer.pyx
> 6a837c5ea6 Trac #27818: Meet-subsemilattice for lattices
> 2920f66a0e Trac #27798: Add `backend` option to associahedron and flow 
> polytope
> 98f3199887 Trac #27587: Follow up to #25680: Fix tempfile handling in doctests
> 0719be21c2 Trac #27473: Matrix inversion fails over a Laurent series ring
> 842a3dcd41 Trac #27444: Expose multithreaded fflas-ffpack features
> cee95e6b38 Trac #28404: Sign of hypergeometric motives is sometimes wrong
> af8bf5ead8 Trac #28400: fixing a few roles
> 1cdf4955c6 Trac #28398: _richcmp_ for quaternion algebra elements
> abb2397287 Trac #28397: fix some wrong doctests that were not run
> 2465a9e494 Trac #28396: faster Möbius matrix for Hasse diagrams
> 4b4b5bf81b Trac #28395: Bug in is_weil_polynomial
> 77466c5716 Trac #28393: add self-tests for polymake
> a7f0a353e5 Trac #28391: dependencies file for jupymake
> e7a3ec0d98 Trac #28377: polymake interface broken with "non-standard" 
> quadratic fields
> a535670711 Trac #28339: Random failure in src/sage/interfaces/
> f34f77e4da Trac #28271: Implement LexM traversal
> 304feb1626 Trac #28229: Generalized shifted prime tableau
> e570374675 Trac #27689: Implement is_pyramid, is_bipyramid, is_prism for 
> polytopes
> addde7bcc7 Trac #28380: bump up the version of givaro in spkg-configure.m4
> 8f1c30f031 Trac #28403: py3: crypto/block_cipher/ doctest failures
> 0ae7ffa669 Trac #25727: Prevent giac from giving localized output
> 109c1bd6c1 Trac #28060: Extensions of finite fields embeddings: we have 
> inverse image but `inverse_image` throws `NotImplemented`
> 0c5c45c0cf Trac #27937: Fix for functorial construction of monoid algebras
> fee35bf412 Trac #27851: Convert sqrt(D) to UCF
> 3b7ef2c62c Trac #27831: Small fix for is_symmetric for matrices over CDF
> 8f76f4d242 Trac #27760: Generalized Permutohedra and type H4 4-uniform 
> polytopes
> 67de66d92d Trac #27096: Bug in Buchberger algorithm over Tate algebra
> 6b8839d39f Trac #25823: maxima segfaults on integral computation
> 4583b4056e (tag: 8.9.beta8, trac/develop) Updated SageMath version to 
> 8.9.beta8
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