我在一个凤凰项目中，并且mix ecto.create,mix ecto.migrate和mix ecto.drop都发出相同的错误：
$ mix ecto.drop
==> 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)