Sorry, I sent too early. This is with Xcode 9.1 (the most recent version).

On Thursday, November 9, 2017 at 2:31:25 PM UTC-8, John H Palmieri wrote:
>
> WIth OS X 10.12.6, Xcode (and the same happens when building with clang, 
> #12426):
>
> sage -t --long --warn-long 64.0 src/sage/matrix/matrix_mod2_dense.pyx  # 
> Killed due to kill signal
>
> **********************************************************************
> Tests run before process (pid=12556) failed:
> sage: a = matrix(GF(2),3,range(9),sparse=False); a ## line 8 ##
> [0 1 0]
> [1 0 1]
> [0 1 0]
> sage: a.rank() ## line 12 ##
> 2
> sage: type(a) ## line 14 ##
> <type 'sage.matrix.matrix_mod2_dense.Matrix_mod2_dense'>
> sage: a[0,0] = 1 ## line 16 ##
> sage: a.rank() ## line 17 ##
> 3
> sage: parent(a) ## line 19 ##
> Full MatrixSpace of 3 by 3 dense matrices over Finite Field of size 2
> sage: a^2 ## line 22 ##
> [0 1 1]
> [1 0 0]
> [1 0 1]
> sage: a+a ## line 26 ##
> [0 0 0]
> [0 0 0]
> [0 0 0]
> sage: b = a.new_matrix(2,3,range(6)); b ## line 31 ##
> [0 1 0]
> [1 0 1]
> sage: a*b ## line 35 ##
> sage: b*a ## line 39 ##
> [1 0 1]
> [1 0 0]
> sage: TestSuite(a).run() ## line 43 ##
> sage: TestSuite(b).run() ## line 44 ##
> sage: a.echelonize(); a ## line 46 ##
> [1 0 0]
> [0 1 0]
> [0 0 1]
> sage: b.echelonize(); b ## line 50 ##
> [1 0 1]
> [0 1 0]
> sage: FF = FiniteField(2) ## line 56 ##
> sage: V = VectorSpace(FF,2) ## line 57 ##
> sage: v = V([0,1]); v ## line 58 ##
> (0, 1)
> sage: W = V.subspace([v]) ## line 60 ##
> sage: W ## line 61 ##
> Vector space of degree 2 and dimension 1 over Finite Field of size 2
> Basis matrix:
> [0 1]
> sage: v in W ## line 65 ##
> True
> sage: M = Matrix(GF(2), [[1,1,0],[0,1,0]]) ## line 68 ##
> sage: M.row_space() ## line 69 ##
> Vector space of degree 3 and dimension 2 over Finite Field of size 2
> Basis matrix:
> [1 0 0]
> [0 1 0]
> sage: M = Matrix(GF(2), [[1,1,0],[0,0,1]]) ## line 75 ##
> sage: M.row_space() ## line 76 ##
> Vector space of degree 3 and dimension 2 over Finite Field of size 2
> Basis matrix:
> [1 1 0]
> [0 0 1]
> sage: sig_on_count() # check sig_on/off pairings (virtual doctest) ## line 
> 90 ##
> 0
> sage: type(random_matrix(GF(2),2,2)) ## line 165 ##
> <type 'sage.matrix.matrix_mod2_dense.Matrix_mod2_dense'>
> sage: Matrix(GF(2),3,3,1) # indirect doctest ## line 168 ##
> [1 0 0]
> [0 1 0]
> [0 0 1]
> sage: matrix(GF(2),0,[]) * vector(GF(2),0,[]) ## line 177 ##
> ()
> sage: MatrixSpace(GF(2), 2^30)(1) ## line 182 ##
>
> **********************************************************************
>
> On Wednesday, November 8, 2017 at 1:30:44 PM UTC-8, 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 
>> http://www.sagemath.org/download-latest.html
>>
>> b707ce9348 (tag: 8.1.rc0, trac/develop) Updated SageMath version to 
>> 8.1.rc0
>> 0542f0a7fb Trac #19517: Graphs: canonical_label() and several errors
>> c73b0be317 Trac #24143: zeromq: don't use -Werror
>> 06dbe2327a Trac #24154: Fix equation handling of 
>> Polyhedron.to_linear_program() and thus 
>> integral_points_count(preprocess=True)
>> 23c060c581 Trac #24062: Upgrade to SymPy-1.1.1
>> a89800b2e0 Trac #16801: Conversion of psi(x,y) to/from SymPy
>> dc9be1b424 Trac #20204: Fix problems with constructing or converting to 
>> SymPy expressions
>> 8ad8826519 Trac #23954: Mass change of docstring: from "-" to "--", 
>> variables with underscores
>> 82666c4788 Trac #24095: Part 2, "Posets.*" to "posets.*"
>> 780f69dd4d Trac #24076: Pep8-compliance, lattices.py as an example
>> e33beaf80a Trac #24069: let our required header be pep8 compliant
>> ca925431c8 Trac #24048: Unify selfdual and self_dual
>> 071c1bf918 Trac #18536: Solvers for constant sum games
>> 5c90df6193 Trac #24133: py3 : get rid of im_func again
>> 13d7a570cb Trac #24132: py3: some care for items() and values()
>> 3897c7f864 Trac #24126: py3: some more care for keys()[...]
>> 63273442d6 Trac #24119: Create an assuming() context manager
>> 701897ecc3 Trac #24114: prefer list(K) over K.list() for syndrom decoder
>> 4d82659aaa Trac #24104: Merge the code of ex.solve(...) and solve(...)
>> 004a326306 Trac #23991: Update curl to 7.56.1
>> 4ddb4717bd Trac #23787: py3: richcmp for ideals
>> b78794f137 Trac #23112: Repair math-readline script for interactive use, 
>> mathematica_console and make Mathematica pexpect work without helper script
>> c59a1adb5b Trac #20439: eigenmatrix_right gives the conjugate of what it 
>> should
>> a181bc24e8 Trac #24081: Use system curl if possible
>> 4398274f52 Trac #24061: Slightly faster test for semiorder
>> 7c6371b16d Trac #11541: Add example with solution_dict and substituting 
>> in a matrix
>> 9d1fdaa3c0 Trac #24127: py3: adding hash for complex fields
>> 7ec526c44c Trac #24124: lazy import hecke algebras
>> 75e5ef97f6 Trac #24120: Implement the q-Pochhammer symbol
>> 20f0073693 Trac #24116: Fix Cython warnings in finite_rings
>> 9896ca2282 Trac #24113: Add test for cactus graph
>> 326106ee54 Trac #24110: Upgrade to Cython 0.27.2
>> 7b3992b637 Trac #24109: Always enable debug.bad_parent_warnings
>> 02cebd0016 Trac #24105: Deprecate Sage-specific Cython pragmas like #clib
>> e738d859cb Trac #24103: Remove a lot of deprecated code
>> b8686f64dd Trac #24026: Upgrade R to 3.4.2
>> 75506c95b1 Trac #23982: perfect matchings and containment
>> a62930e0e7 Trac #23919: Sage library: standardize on C99 and C++11
>> c646a6d7a7 Trac #22566: SymPy's ceiling() is not translated to Sage
>> 79be5d5a7b Trac #24099: Use PPL by default for Fractional Chromatic Index
>> 6c101056ac Trac #24017: Add sdh_die helper function--report an error 
>> message and exit
>> acdd015032 Trac #23923: Interface cases function with SymPy's piecewise
>> 0d0a98582f Trac #23830: Add SBox Instance: DBlock cipher
>> 72ccc417e4 Trac #23804: gap_eval: move libgap_enter() inside sig_on()
>> d0950542cf Trac #21303: Make hecke operators not blow up the memory
>> 1df89a43aa Trac #10950: The hash function for matrices suffers from many 
>> collisions
>> 10d2434878 Trac #24097: Broken paths in cython()'d modules
>> 2b602e263f Trac #24090: Clean up matrix hashing
>> ac85d0d147 Trac #24068: py3: some care for .values()[...]
>> 1493886987 Trac #24029: Force -std=gnu++11 for Linbox
>> a9dc63f072 Trac #24021: Checking if a graph is cograph
>> 0ee8241017 Trac #24006: SymPy --> Sage conversion completely inside Sage
>> 8785904f43 Trac #23967: Coercion pushout for FGP_modules
>> d396f15a96 Trac #23939: Link from IntegerVectors documentation to 
>> IntegerListsLex documentation
>> 7138bd107c Trac #23861: Doctest: Make Expression normalization work with 
>> symbolic powers
>> 9898df4172 Trac #23793: Doctest: Bug in symbolic GCD computations 
>> involving complex I
>> af44562d9f Trac #23742: Check for overflow in matrix_mod2_dense
>> 14d3ce4969 Trac #23707: More competitive and comprehensive finite 
>> dimensional algebras
>> 7c41260607 Trac #23400: Cleanup of matrix_gfpn_dense
>> 4879c7f48a Trac #22391: Always use PPL for facet normals of lattice 
>> polytopes
>> 35f930c0fc Trac #22073: Surprising matrix solve error message
>> d6f7f9e5bd Trac #18970: Log function and documentation revamp
>> e7f6e8fede Trac #10035: Hold context
>> 88b3fbff89 Trac #24072: Disallow positive characteristic in the symbolic 
>> ring
>> 3e7031cef8 Trac #14305: Doctest: Immediate simplifications of symbolic 
>> powers
>> 4dd39c0de8 Trac #24092: Make brial depend on pip
>> a90b25ebf7 Trac #23898: Upgrade to gcc 7.2.0 (gcc 5.4.0 does not build 
>> with Xcode 9.0)
>> 8418fd787f Trac #24074: cleanup of words/words.py
>> 78b5f627f1 Trac #23988: another collection of typos
>> 5a9a622251 Trac #23916: Pretty printing and latex for Genera of quadratic 
>> forms
>> 9392bc7845 Trac #24077: Fix is_integral() for quadratic order elements
>> e0668d49c1 Trac #24042: Upgrade fplll and fpylll
>> e07d641b30 Trac #23781: python2/3: split spkg-install to spkg-build; fix 
>> various build issues
>> 7db5a8af9a Trac #24088: build hangs on ipykernel
>> 9b80346b3a Trac #24075: doctest failure in  
>> schemes/elliptic_curves/heegner.py
>> bc45dab36e (tag: 8.1.beta9) Updated SageMath version to 8.1.beta9
>>
>>

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