Update rake requirement from ~> 10.0 to ~> 12.3

Gemfile.lock

@@ -0,0 +1,185 @@
+PATH
+  remote: ..
+  specs:
+    metrician (0.1.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    actionmailer (4.2.8)
+      actionpack (= 4.2.8)
+      actionview (= 4.2.8)
+      activejob (= 4.2.8)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.8)
+      actionview (= 4.2.8)
+      activesupport (= 4.2.8)
+      rack (~> 1.6)
+      rack-test (~> 0.6.2)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.8)
+      activesupport (= 4.2.8)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (4.2.8)
+      activesupport (= 4.2.8)
+      globalid (>= 0.3.0)
+    activemodel (4.2.8)
+      activesupport (= 4.2.8)
+      builder (~> 3.1)
+    activerecord (4.2.8)
+      activemodel (= 4.2.8)
+      activesupport (= 4.2.8)
+      arel (~> 6.0)
+    activesupport (4.2.8)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    arel (6.0.4)
+    builder (3.2.3)
+    byebug (9.0.6)
+    concurrent-ruby (1.0.5)
+    connection_pool (2.2.1)
+    dalli (2.7.6)
+    database_cleaner (1.6.1)
+    delayed_job (4.1.3)
+      activesupport (>= 3.0, < 5.2)
+    delayed_job_active_record (4.1.2)
+      activerecord (>= 3.0, < 5.2)
+      delayed_job (>= 3.0, < 5)
+    diff-lcs (1.3)
+    docile (1.1.5)
+    erubis (2.7.0)
+    gemika (0.3.2)
+    globalid (0.4.0)
+      activesupport (>= 4.2.0)
+    honeybadger (3.1.2)
+    i18n (0.8.4)
+    instrumental_agent (1.0.1)
+    json (1.8.6)
+    loofah (2.0.3)
+      nokogiri (>= 1.5.9)
+    mail (2.6.6)
+      mime-types (>= 1.16, < 4)
+    memcached (1.8.0)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.2.0)
+    minitest (5.10.2)
+    mono_logger (1.1.0)
+    multi_json (1.12.1)
+    mysql2 (0.3.17)
+    nokogiri (1.8.0)
+      mini_portile2 (~> 2.2.0)
+    rack (1.6.8)
+    rack-protection (1.5.3)
+      rack
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (4.2.8)
+      actionmailer (= 4.2.8)
+      actionpack (= 4.2.8)
+      actionview (= 4.2.8)
+      activejob (= 4.2.8)
+      activemodel (= 4.2.8)
+      activerecord (= 4.2.8)
+      activesupport (= 4.2.8)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.2.8)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.8)
+      activesupport (>= 4.2.0.beta, < 5.0)
+      nokogiri (~> 1.6)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.0.3)
+      loofah (~> 2.0)
+    railties (4.2.8)
+      actionpack (= 4.2.8)
+      activesupport (= 4.2.8)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (12.3.3)
+    redis (3.3.3)
+    redis-namespace (1.5.3)
+      redis (~> 3.0, >= 3.0.4)
+    resque (1.27.4)
+      mono_logger (~> 1.0)
+      multi_json (~> 1.0)
+      redis-namespace (~> 1.3)
+      sinatra (>= 0.9.2)
+      vegas (~> 0.1.2)
+    rspec (3.6.0)
+      rspec-core (~> 3.6.0)
+      rspec-expectations (~> 3.6.0)
+      rspec-mocks (~> 3.6.0)
+    rspec-core (3.6.0)
+      rspec-support (~> 3.6.0)
+    rspec-expectations (3.6.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.6.0)
+    rspec-mocks (3.6.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.6.0)
+    rspec-support (3.6.0)
+    sidekiq (4.2.10)
+      concurrent-ruby (~> 1.0)
+      connection_pool (~> 2.2, >= 2.2.0)
+      rack-protection (>= 1.5.0)
+      redis (~> 3.2, >= 3.2.1)
+    simplecov (0.14.1)
+      docile (~> 1.1.0)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.1)
+    sinatra (1.4.8)
+      rack (~> 1.5)
+      rack-protection (~> 1.4)
+      tilt (>= 1.3, < 3)
+    sprockets (3.7.1)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.2.0)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    thor (0.19.4)
+    thread_safe (0.3.6)
+    tilt (2.0.7)
+    tzinfo (1.2.3)
+      thread_safe (~> 0.1)
+    vegas (0.1.11)
+      rack (>= 1.0.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  byebug
+  dalli (~> 2.6)
+  database_cleaner
+  delayed_job_active_record
+  gemika
+  honeybadger
+  instrumental_agent
+  memcached (~> 1.7)
+  metrician!
+  mysql2 (= 0.3.17)
+  rack-test
+  rails (~> 4.2.0)
+  rake
+  redis
+  resque
+  rspec (~> 3.4)
+  sidekiq (~> 4.0)
+  simplecov
+
+BUNDLED WITH
+   1.14.6

metrician.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency("instrumental_agent", "~> 0")
   s.add_development_dependency("rubocop", "~> 0")
   s.add_development_dependency("bundler", "~> 1.14")
-  s.add_development_dependency("rake", "~> 10.0")
+  s.add_development_dependency("rake", "~> 12.3")
   s.add_development_dependency("rspec", "~> 3.0")
   s.add_development_dependency("byebug", "~> 0")
   s.add_development_dependency("simplecov", "~> 0")