Anyone else seeing such error on github push: remote: ruby-jemalloc: symbol lookup error: /data/github/current/vendor/gems/2.1.7/ruby/2.1.0/gems/json-1.8.3/lib/json/ext/generator.so: undefined symbol: rb_data_typed_object_alloc To git@github.com:Username/repo.git ! [remote rejected] master -> master (pre-receive hook declined)