title: ecto crashes in phoenix project detecting stack smashing
body: <p>I'm in a phoenix project, and <code>mix ecto.create</code>, <code>mix ecto.migrate</code>, and <code>mix ecto.drop</code> all emit the same error:</p>
  
  <pre><code>$ mix ecto.drop
  ==&gt; tzdata
  Compiled lib/tzdata/parser_organizer.ex
  Compiled lib/tzdata/release_parser.ex
  Compiled lib/tzdata/util.ex
  Compiled lib/tzdata/table_parser.ex
  Compiled lib/tzdata/parser.ex
  Compiled lib/tzdata/table_data.ex
  Compiled lib/tzdata/leap_sec_parser.ex
  Compiled lib/tzdata/basic_data.ex
  Compiled lib/tzdata/period_builder.ex
  Compiled lib/tzdata/far_future_dynamic_periods.ex
  
  Crash dump is being written to: erl_crash.dump...*** stack smashing detected ***: /usr/lib/erlang/erts-7.0/bin/beam terminated
  Aborted (core dumped)
  </code></pre>