<p dir="auto">My issue is about <strong>test_constant_cost_matrix</strong> located in <strong>scipy/optimize/tests/test_linear_assignment.py</strong></p>
<h4 dir="auto">Reproducing code example:</h4>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="python3 runtests.py -v"><pre class="notranslate"><code class="notranslate">python3 runtests.py -v
</code></pre></div>
<h4 dir="auto">Error message:</h4>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="scipy/optimize/tests/test_linear_assignment.py:102: in test_constant_cost_matrix
    assert_array_equal(col_ind, np.arange(n))
E   AssertionError: 
E   Arrays are not equal
E   
E   Mismatched elements: 8 / 8 (100%)
E   Max absolute difference: 7
E   Max relative difference: 5.
E    x: array([7, 6, 5, 4, 3, 2, 1, 0])
E    y: array([0, 1, 2, 3, 4, 5, 6, 7])
"><pre class="notranslate"><code class="notranslate">scipy/optimize/tests/test_linear_assignment.py:102: in test_constant_cost_matrix
    assert_array_equal(col_ind, np.arange(n))
E   AssertionError: 
E   Arrays are not equal
E   
E   Mismatched elements: 8 / 8 (100%)
E   Max absolute difference: 7
E   Max relative difference: 5.
E    x: array([7, 6, 5, 4, 3, 2, 1, 0])
E    y: array([0, 1, 2, 3, 4, 5, 6, 7])

</code></pre></div>
<h4 dir="auto">Scipy/Numpy/Python version information:</h4>
<p dir="auto">python version: 3.8.1<br>
numpy version: 1.18.1<br>
scipy version: 1.5.0.dev0+2774bec</p>
<p dir="auto">Since many people are working on different parts of this I think we better take out the actual work out of the discussions scattered around.</p>
<p dir="auto">Currently Travis matrix is as follows</p>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> ARM - Test Group 1</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> ARM - Test Group 2</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Pre-release Dependencies, Source Dist (<strong>-&gt; In Azure now</strong>)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Coverage, Full test suite (<strong>--&gt; In Azure now</strong>)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Python 3.7 Debug (<strong>--&gt; In GitHub Actions</strong> <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="751003324" data-permission-text="Title is private" data-url="https://github.com/scipy/scipy/issues/13136" data-hovercard-type="pull_request" data-hovercard-url="/scipy/scipy/pull/13136/hovercard" href="https://github.com/scipy/scipy/pull/13136">#13136</a> )</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Python 3.7 PowerPc</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Pre-release Deps, 64-bit BLAS (<strong>--&gt; In Azure now</strong>)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Refguide-check, Latest NumPy (<strong>--&gt; In Azure now</strong>)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Source Distribution (<strong>--&gt; In Azure now</strong>)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Wheel, Optimised, GCC 4.8 (<strong>--&gt; In Azure now</strong>)</li>
</ul>
<p dir="auto">Could you please edit, cross and put where the new location is so we don't get conflicts?</p>
<p dir="auto">Pinging <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/tylerjereddy/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/tylerjereddy">@tylerjereddy</a> <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/mattip/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/mattip">@mattip</a> for heads up</p>