GEM remote: https://rubygems.org/ specs: activemodel (5.1.5) activesupport (= 5.1.5) activerecord (5.1.5) activemodel (= 5.1.5) activesupport (= 5.1.5) arel (~> 8.0) activesupport (5.1.5) concurrent-ruby (~> 1.0, >= 1.0.2) i18n (~> 0.7) minitest (~> 5.1) tzinfo (~> 1.1) arel (8.0.0) concurrent-ruby (1.0.5) daemons (1.2.6) et-orbi (1.0.9) tzinfo i18n (0.9.5) concurrent-ruby (~> 1.0) mail (2.7.0) mini_mime (>= 0.1.1) mini_mime (1.0.0) minitest (5.11.3) mysql2 (0.4.10) rufus-scheduler (3.4.2) et-orbi (~> 1.0) serialport (1.3.1) state_pattern (2.0.2) thread_safe (0.3.6) tzinfo (1.2.5) thread_safe (~> 0.1) PLATFORMS ruby DEPENDENCIES activerecord daemons mail mysql2 rufus-scheduler serialport state_pattern BUNDLED WITH 1.16.1