Rails 6 requires Ruby 2.4.1+

Skipping over 2.4.0 to sidestep the `"symbol_from_string".to_sym.dup` bug.

References #32028

2 files changed, 2 insertions, 4 deletions

diff --git a/activejob/lib/active_job/arguments.rb b/activejob/lib/active_job/arguments.rb
index e6ada163e8..86bb0c5540 100644
--- a/activejob/lib/active_job/arguments.rb
+++ b/activejob/lib/active_job/arguments.rb
@@ -14,8 +14,8 @@ module ActiveJob
   end
 
   # Raised when an unsupported argument type is set as a job argument. We
-  # currently support NilClass, Integer, Fixnum, Float, String, TrueClass, FalseClass,
-  # Bignum, BigDecimal, and objects that can be represented as GlobalIDs (ex: Active Record).
+  # currently support NilClass, Integer, Float, String, TrueClass, FalseClass,
+  # BigDecimal, and objects that can be represented as GlobalIDs (ex: Active Record).
   # Raised if you set the key for a Hash something else than a string or
   # a symbol. Also raised when trying to serialize an object which can't be
   # identified with a Global ID - such as an unpersisted Active Record model.
@@ -25,7 +25,6 @@ module ActiveJob
     extend self
     # :nodoc:
     TYPE_WHITELIST = [ NilClass, String, Integer, Float, BigDecimal, TrueClass, FalseClass ]
-    TYPE_WHITELIST.push(Fixnum, Bignum) unless 1.class == Integer
 
     # Serializes a set of arguments. Whitelisted types are returned
     # as-is. Arrays/Hashes are serialized element by element.
diff --git a/activejob/lib/active_job/logging.rb b/activejob/lib/active_job/logging.rb
index f53b7eaee5..96c48d04a7 100644
--- a/activejob/lib/active_job/logging.rb
+++ b/activejob/lib/active_job/logging.rb
@@ -1,6 +1,5 @@
 # frozen_string_literal: true
 
-require "active_support/core_ext/hash/transform_values"
 require "active_support/core_ext/string/filters"
 require "active_support/tagged_logging"
 require "active_support/logger"