=================================== FAILURES ===================================
_________________________ FSTest.test_walk_single_star _________________________
self = <pants_test.engine.test_fs.FSTest testMethod=test_walk_single_star>
    def test_walk_single_star(self):
>     self.assert_walk_files(['*'], ['4.txt'])
pants_test/engine/test_fs.py:125: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
pants_test/engine/test_fs.py:59: in assert_walk_files
    self.assert_walk_snapshot('files', filespecs_or_globs, paths, **kwargs)
pants_test/engine/test_fs.py:66: in assert_walk_snapshot
    result = self.execute(scheduler, Snapshot, self.specs(filespecs_or_globs))[0]
pants_test/engine/scheduler_test_base.py:74: in execute
    return self.execute_literal(scheduler, request)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
self = <pants_test.engine.test_fs.FSTest testMethod=test_walk_single_star>
scheduler = <pants.engine.scheduler.SchedulerSession object at 0x7d533807fd68>
execution_request = ExecutionRequest(roots=((PathGlobs(include=('*',), exclude=(), glob_match_error_behavior=GlobMatchErrorBehavior(value=...ction(value='any_match')), <class 'pants.engine.fs.Snapshot'>),), native=<cdata 'struct ExecutionRequest *' 0xef0d810>)
    def execute_literal(self, scheduler, execution_request):
      returns, throws = scheduler.execute(execution_request)
      if throws:
        with temporary_file_path(cleanup=False, suffix='.dot') as dot_file:
          scheduler.visualize_graph_to_file(dot_file)
>         raise ValueError('At least one root failed: {}. Visualized as {}'.format(throws, dot_file))
E         ValueError: At least one root failed: (((PathGlobs(include=('*',), exclude=(), glob_match_error_behavior=GlobMatchErrorBehavior(value='ignore'), conjunction=GlobExpansionConjunction(value='any_match')), <class 'pants.engine.fs.Snapshot'>), Throw(exc=Exception('Snapshot failed: Error making env for store at "/tmp/tmppc8cyu15/directories/e": Cannot allocate memory',))),). Visualized as /tmp/tmps5j2j5w4.dot