CI failing with scipy 1.14.0 release

[ElePT]

Environment

• Qiskit version: 1.2
• Python version: 3.12
• Operating system: CI

What is happening?

The following failures have been detected in relation with scipy==1.14.0:

2024-06-24T21:17:04.2026840Z ==============================
2024-06-24T21:17:04.2027540Z Failed 4 tests - output below:
2024-06-24T21:17:04.2027870Z ==============================
2024-06-24T21:17:04.2028030Z 
2024-06-24T21:17:04.2028220Z test.python.circuit.test_gate_power.TestGateSqrt.test_unitary_sqrt
2024-06-24T21:17:04.2028870Z ------------------------------------------------------------------
2024-06-24T21:17:04.2029100Z 
2024-06-24T21:17:04.2029170Z Captured traceback:
2024-06-24T21:17:04.2029410Z ~~~~~~~~~~~~~~~~~~~
2024-06-24T21:17:04.2029610Z     Traceback (most recent call last):
2024-06-24T21:17:04.2029790Z 
2024-06-24T21:17:04.2030740Z       File "/Users/runner/work/qiskit/qiskit/test/python/circuit/test_gate_power.py", line 116, in test_unitary_sqrt
2024-06-24T21:17:04.2031760Z     self.assertEqual(Operator(result), Operator(expected))
2024-06-24T21:17:04.2032000Z 
2024-06-24T21:17:04.2032410Z       File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/unittest/case.py", line 885, in assertEqual
2024-06-24T21:17:04.2033040Z     assertion_func(first, second, msg=msg)
2024-06-24T21:17:04.2033240Z 
2024-06-24T21:17:04.2033690Z       File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/unittest/case.py", line 878, in _baseAssertEqual
2024-06-24T21:17:04.2034470Z     raise self.failureException(msg)
2024-06-24T21:17:04.2034720Z 
2024-06-24T21:17:04.2034920Z     AssertionError: Operator([[ 0.5-0.5j, -0.5+0.5j],
2024-06-24T21:17:04.2035340Z           [ 0.5-0.5j, [51 chars](2,)) != Operator([[ 0.5+0.5j,  0.5+0.5j],
2024-06-24T21:17:04.2035800Z           [-0.5-0.5j, [51 chars](2,))
2024-06-24T21:17:04.2035970Z 
2024-06-24T21:17:04.2035980Z 
2024-06-24T21:17:04.2036220Z test.python.quantum_info.operators.channel.test_kraus.TestKraus.test_circuit_init
2024-06-24T21:17:04.2036900Z ---------------------------------------------------------------------------------
2024-06-24T21:17:04.2037200Z 
2024-06-24T21:17:04.2037270Z Captured traceback:
2024-06-24T21:17:04.2037560Z ~~~~~~~~~~~~~~~~~~~
2024-06-24T21:17:04.2037770Z     Traceback (most recent call last):
2024-06-24T21:17:04.2038010Z 
2024-06-24T21:17:04.2038930Z       File "/Users/runner/work/qiskit/qiskit/test/python/quantum_info/operators/channel/test_kraus.py", line 71, in test_circuit_init
2024-06-24T21:17:04.2039700Z     self.assertEqual(op, target)
2024-06-24T21:17:04.2039890Z 
2024-06-24T21:17:04.2040430Z       File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/unittest/case.py", line 885, in assertEqual
2024-06-24T21:17:04.2041110Z     assertion_func(first, second, msg=msg)
2024-06-24T21:17:04.2041320Z 
2024-06-24T21:17:04.2041800Z       File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/unittest/case.py", line 878, in _baseAssertEqual
2024-06-24T21:17:04.2042480Z     raise self.failureException(msg)
2024-06-24T21:17:04.2042720Z 
2024-06-24T21:17:04.2043360Z     AssertionError: Kraus([[[ 0. +0.j,  0. +0.j,  0.5+0.j,  0.5+0.j,  0. +[785 chars], 2)) != Kraus([[[ 0.        +0.j        ,  0.        +0.j     [1889 chars], 2))
2024-06-24T21:17:04.2043910Z 
2024-06-24T21:17:04.2044100Z 
2024-06-24T21:17:04.2044440Z test.python.quantum_info.operators.channel.test_stinespring.TestStinespring.test_circuit_init
2024-06-24T21:17:04.2045300Z ---------------------------------------------------------------------------------------------
2024-06-24T21:17:04.2045650Z 
2024-06-24T21:17:04.2045720Z Captured traceback:
2024-06-24T21:17:04.2045890Z ~~~~~~~~~~~~~~~~~~~
2024-06-24T21:17:04.2046090Z     Traceback (most recent call last):
2024-06-24T21:17:04.2046270Z 
2024-06-24T21:17:04.2046770Z       File "/Users/runner/work/qiskit/qiskit/test/python/quantum_info/operators/channel/test_stinespring.py", line 64, in test_circuit_init
2024-06-24T21:17:04.2047450Z     self.assertEqual(op, target)
2024-06-24T21:17:04.2047650Z 
2024-06-24T21:17:04.2048030Z       File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/unittest/case.py", line 885, in assertEqual
2024-06-24T21:17:04.2048610Z     assertion_func(first, second, msg=msg)
2024-06-24T21:17:04.2048860Z 
2024-06-24T21:17:04.2049400Z       File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/unittest/case.py", line 878, in _baseAssertEqual
2024-06-24T21:17:04.2050020Z     raise self.failureException(msg)
2024-06-24T21:17:04.2050240Z 
2024-06-24T21:17:04.2050690Z     AssertionError: Stinespring([[ 0. +0.j,  0. +0.j,  0.5+0.j,  0.5+0.j,  0. +[865 chars], 2)) != Stinespring([[ 0.        +0.j        ,  0.        +0.j     [2049 chars], 2))
2024-06-24T21:17:04.2051280Z 
2024-06-24T21:17:04.2051290Z 
2024-06-24T21:17:04.2051660Z test.python.quantum_info.operators.symplectic.test_sparse_pauli_op.TestSparsePauliOpConversions.test_to_matrix_zero
2024-06-24T21:17:04.2052670Z -------------------------------------------------------------------------------------------------------------------
2024-06-24T21:17:04.2052950Z 
2024-06-24T21:17:04.2053020Z Captured traceback:
2024-06-24T21:17:04.2053190Z ~~~~~~~~~~~~~~~~~~~
2024-06-24T21:17:04.2053390Z     Traceback (most recent call last):
2024-06-24T21:17:04.2053640Z 
2024-06-24T21:17:04.2054240Z       File "/Users/runner/work/qiskit/qiskit/test/python/quantum_info/operators/symplectic/test_sparse_pauli_op.py", line 274, in test_to_matrix_zero
2024-06-24T21:17:04.2055150Z     np.testing.assert_array_equal(zero_sparse.A, zero_numpy)
2024-06-24T21:17:04.2055500Z                                   ^^^^^^^^^^^^^
2024-06-24T21:17:04.2055730Z 
2024-06-24T21:17:04.2055990Z     AttributeError: 'csr_matrix' object has no attribute 'A'
2024-06-24T21:17:04.2056250Z 

How can we reproduce the issue?

CI tests using Python 3.12

What should happen?

No failures :)

Any suggestions?

Pinning scipy until issues are resolved (#12654).

[jakelishman]

Coming back to this: this is macOS, and I think the first three failures are all because SciPy 1.14 switched to use Accelerate as its default BLAS. The problems of #13305 are likely the simplest reproducer of those failures.

The last one is just because the .A attribute on sparse matrices was deprecated and removed. Apparently I introduced that in #11388, and we haven't been seeing the warnings for some reason?