Issue #10525 has been updated by Nobuyoshi Nakada. Status changed from Open to Rejected You use the extension for 2.0.0 from 2.1. You have to install mysql2 for 2.1 ---------------------------------------- Bug #10525: SegFault with mysql2 gem https://bugs.ruby-lang.org/issues/10525#change-50011 * Author: Tad Lamb * Status: Rejected * Priority: Normal * Assignee: ruby-core * Category: * Target version: current: 2.2.0 * ruby -v: 2.1.4 * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN ---------------------------------------- I received this segfault when executing the command `bundle exec rake db:migrate` ---Files-------------------------------- output.txt (57.2 KB) ruby_2014-11-18-223552_Tad.crash (17.7 KB) -- https://bugs.ruby-lang.org/