title: Segmentation fault (core dumped) when running testsuite
body: <p>I randomly (and often) receive a <code>Segmentation fault (core dumped)</code> error when running phpunit (version 6.4.1) on a testsuite inside ssh of homestead. When I run one unit test at a time or run a smaller suite, the tests all pass. The most memory any one of the tests use is 20.00 MB.</p>
  
  <p>Outside ssh (PHPUnit version 6.2.3), the tests all run perfectly: <code>OK (131 tests, 1876 assertions)</code></p>
  
  <p>In each test, I use <code>Illuminate\Foundation\Testing\DatabaseMigrations</code>, running on a database connection:</p>
  
  <pre><code>'testing' =&gt; [
          'driver'   =&gt; 'sqlite',
          'database' =&gt; ':memory:',
          'prefix'   =&gt; '',
      ],
  </code></pre>
  
  <p>Should I be concerned at all about this? Is it just best practice to run phpunit outside of ssh? I don't want to update my PHPUnit and then find that I have to run my tests one by one.</p>