<p dir="auto">It has been happening for two days (everything seems fine in PRs), see the failed builds for the 4 latest commits in master:<br>
<a href="https://circleci.com/gh/scikit-learn/scikit-learn/17721" rel="nofollow">https://circleci.com/gh/scikit-learn/scikit-learn/17721</a><br>
<a href="https://circleci.com/gh/scikit-learn/scikit-learn/17765" rel="nofollow">https://circleci.com/gh/scikit-learn/scikit-learn/17765</a><br>
<a href="https://circleci.com/gh/scikit-learn/scikit-learn/17776" rel="nofollow">https://circleci.com/gh/scikit-learn/scikit-learn/17776</a><br>
<a href="https://circleci.com/gh/scikit-learn/scikit-learn/17789" rel="nofollow">https://circleci.com/gh/scikit-learn/scikit-learn/17789</a><br>
The error messages are the same:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="rewrite dev/searchindex.js (73%)
ERROR: The key you are authenticating with has been marked as read only.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Exited with code 128"><pre class="notranslate"><code class="notranslate">rewrite dev/searchindex.js (73%)
ERROR: The key you are authenticating with has been marked as read only.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Exited with code 128
</code></pre></div>
<p dir="auto">We need to restart to get the build pass<br>
I can't find any relevant information from Circle so I post here<br>
ping <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/jnothman/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/jnothman">@jnothman</a> <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/lesteve/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/lesteve">@lesteve</a></p>
<p dir="auto">Got a  heisen travis failure while working on <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="33976066" data-permission-text="Title is private" data-url="https://github.com/scikit-learn/scikit-learn/issues/3173" data-hovercard-type="pull_request" data-hovercard-url="/scikit-learn/scikit-learn/pull/3173/hovercard" href="https://github.com/scikit-learn/scikit-learn/pull/3173">#3173</a>.<br>
The entire travis log is at <a href="https://travis-ci.org/scikit-learn/scikit-learn/jobs/25868444" rel="nofollow">https://travis-ci.org/scikit-learn/scikit-learn/jobs/25868444</a></p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="======================================================================
ERROR: sklearn.linear_model.tests.test_omp.test_omp_cv
----------------------------------------------------------------------
Traceback (most recent call last):
  File &quot;/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/nose/case.py&quot;, line 197, in runTest
    self.test(*self.arg)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/tests/test_omp.py&quot;, line 195, in test_omp_cv
    ompcv.fit(X, y_)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py&quot;, line 867, in fit
    for train, test in cv)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/externals/joblib/parallel.py&quot;, line 644, in __call__
    self.dispatch(function, args, kwargs)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/externals/joblib/parallel.py&quot;, line 391, in dispatch
    job = ImmediateApply(func, args, kwargs)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/externals/joblib/parallel.py&quot;, line 129, in __init__
    self.results = func(*args, **kwargs)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py&quot;, line 764, in _omp_path_residues
    return_path=True)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py&quot;, line 371, in orthogonal_mp
    copy_X=copy_X, return_path=return_path)
  File &quot;/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py&quot;, line 109, in _cholesky_omp
    **solve_triangular_args)
  File &quot;/usr/lib/python2.7/dist-packages/scipy/linalg/basic.py&quot;, line 115, in solve_triangular
    a1, b1 = map(asarray_chkfinite,(a,b))
  File &quot;/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/numpy/lib/function_base.py&quot;, line 595, in asarray_chkfinite
    &quot;array must not contain infs or NaNs&quot;)
ValueError: array must not contain infs or NaNs"><pre class="notranslate"><code class="notranslate">======================================================================
ERROR: sklearn.linear_model.tests.test_omp.test_omp_cv
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/tests/test_omp.py", line 195, in test_omp_cv
    ompcv.fit(X, y_)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py", line 867, in fit
    for train, test in cv)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/externals/joblib/parallel.py", line 644, in __call__
    self.dispatch(function, args, kwargs)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/externals/joblib/parallel.py", line 391, in dispatch
    job = ImmediateApply(func, args, kwargs)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/externals/joblib/parallel.py", line 129, in __init__
    self.results = func(*args, **kwargs)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py", line 764, in _omp_path_residues
    return_path=True)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py", line 371, in orthogonal_mp
    copy_X=copy_X, return_path=return_path)
  File "/home/travis/build/scikit-learn/scikit-learn/sklearn/linear_model/omp.py", line 109, in _cholesky_omp
    **solve_triangular_args)
  File "/usr/lib/python2.7/dist-packages/scipy/linalg/basic.py", line 115, in solve_triangular
    a1, b1 = map(asarray_chkfinite,(a,b))
  File "/home/travis/virtualenv/python2.7_with_system_site_packages/local/lib/python2.7/site-packages/numpy/lib/function_base.py", line 595, in asarray_chkfinite
    "array must not contain infs or NaNs")
ValueError: array must not contain infs or NaNs
</code></pre></div>
<p dir="auto">The test doesn't seem to be always stable.</p>