Fitting 3 folds for each of 50 candidates, totalling 150 fits
[Parallel(n_jobs=4)]: Using backend LokyBackend with 4 concurrent workers.
[Parallel(n_jobs=4)]: Done   5 tasks      | elapsed: 27.9min
[Parallel(n_jobs=4)]: Done  10 tasks      | elapsed: 75.8min
[Parallel(n_jobs=4)]: Done  17 tasks      | elapsed: 148.5min
[Parallel(n_jobs=4)]: Done  24 tasks      | elapsed: 191.4min
[Parallel(n_jobs=4)]: Done  33 tasks      | elapsed: 260.7min
[Parallel(n_jobs=4)]: Done  42 tasks      | elapsed: 279.3min
[Parallel(n_jobs=4)]: Done  53 tasks      | elapsed: 353.2min
[Parallel(n_jobs=4)]: Done  64 tasks      | elapsed: 428.1min
---------------------------------------------------------------------------
_RemoteTraceback                          Traceback (most recent call last)
_RemoteTraceback:
"""
Traceback (most recent call last):
  File "/home/marvin/.local/lib/python3.6/site-packages/sklearn/externals/joblib/externals/loky/process_executor.py", line 418, in _process_worker
    r = call_item()
  File "/home/marvin/.local/lib/python3.6/site-packages/sklearn/externals/joblib/externals/loky/process_executor.py", line 272, in __call__
    return self.fn(*self.args, **self.kwargs)
  File "/home/marvin/.local/lib/python3.6/site-packages/sklearn/externals/joblib/_parallel_backends.py", line 567, in __call__
    return self.func(*args, **kwargs)
  File "/home/marvin/.local/lib/python3.6/site-packages/sklearn/externals/joblib/parallel.py", line 225, in __call__
    for func, args, kwargs in self.items]
  File "/home/marvin/.local/lib/python3.6/site-packages/sklearn/externals/joblib/parallel.py", line 225, in <listcomp>
    for func, args, kwargs in self.items]
  File "/home/marvin/.local/lib/python3.6/site-packages/sklearn/model_selection/_validation.py", line 583, in _fit_and_score
    print("[CV] %s %s" % ((64 - len(end_msg)) * '.', end_msg))
OSError: [Errno 5] Input/output error
"""

The above exception was the direct cause of the following exception:

OSError                                   Traceback (most recent call last)
<ipython-input-6-19d330d3e83b> in <module>
     30
     31
---> 32 clf.fit(X=X_train, y=np.ravel(y_train), eval_metric=f1_eval)
     33 """xgboost_model = clf.best_estimator_
     34 print (clf.best_score_, clf.best_params_)

~/.local/lib/python3.6/site-packages/sklearn/model_selection/_search.py in fit(self, X, y, groups, **fit_params)
    720                 return results_container[0]
    721
--> 722             self._run_search(evaluate_candidates)
    723
    724         results = results_container[0]

~/.local/lib/python3.6/site-packages/sklearn/model_selection/_search.py in _run_search(self, evaluate_candidates)
   1513         evaluate_candidates(ParameterSampler(
   1514             self.param_distributions, self.n_iter,
-> 1515             random_state=self.random_state))

~/.local/lib/python3.6/site-packages/sklearn/model_selection/_search.py in evaluate_candidates(candidate_params)
    709                                for parameters, (train, test)
    710                                in product(candidate_params,
--> 711                                           cv.split(X, y, groups)))
    712
    713                 all_candidate_params.extend(candidate_params)

~/.local/lib/python3.6/site-packages/sklearn/externals/joblib/parallel.py in __call__(self, iterable)
    928
    929             with self._backend.retrieval_context():
--> 930                 self.retrieve()
    931             # Make sure that we get a last message telling us we are done
    932             elapsed_time = time.time() - self._start_time

~/.local/lib/python3.6/site-packages/sklearn/externals/joblib/parallel.py in retrieve(self)
    831             try:
    832                 if getattr(self._backend, 'supports_timeout', False):
--> 833                     self._output.extend(job.get(timeout=self.timeout))
    834                 else:
    835                     self._output.extend(job.get())

~/.local/lib/python3.6/site-packages/sklearn/externals/joblib/_parallel_backends.py in wrap_future_result(future, timeout)
    519         AsyncResults.get from multiprocessing."""
    520         try:
--> 521             return future.result(timeout=timeout)
    522         except LokyTimeoutError:
    523             raise TimeoutError()

~/.conda/envs/my_root/lib/python3.6/concurrent/futures/_base.py in result(self, timeout)
    403                 raise CancelledError()
    404             elif self._state == FINISHED:
--> 405                 return self.__get_result()
    406             else:
    407                 raise TimeoutError()

~/.conda/envs/my_root/lib/python3.6/concurrent/futures/_base.py in __get_result(self)
    355     def __get_result(self):
    356         if self._exception:
--> 357             raise self._exception
    358         else:
    359             return self._result

OSError: [Errno 5] Input/output error