Use Integer instead of Fixnum for Ruby 2.4+ compatibility.

lib/vagrant/cli.rb

@@ -45,7 +45,7 @@ module Vagrant
         result = 1
       end
 
-      result = 0 if !result.is_a?(Fixnum)
+      result = 0 if !result.is_a?(Integer)
       return result
     end
 

lib/vagrant/plugin/v2/communicator.rb

@@ -50,7 +50,7 @@ module Vagrant
         # until then. It will wait up to the given duration or raise an
         # exception if something goes wrong.
         #
-        # @param [Fixnum] duration Timeout in seconds.
+        # @param [Integer] duration Timeout in seconds.
         # @return [Boolean] Will return true on successful connection
         #   or false on timeout.
         def wait_for_ready(duration)

lib/vagrant/registry.rb

@@ -52,7 +52,7 @@ module Vagrant
 
     # Return the number of elements in this registry.
     #
-    # @return [Fixnum]
+    # @return [Integer]
     def length
       @items.keys.length
     end

plugins/provisioners/shell/config.rb

@@ -106,10 +106,10 @@ module VagrantPlugins
       def args_valid?
         return true if !args
         return true if args.is_a?(String)
-        return true if args.is_a?(Fixnum)
+        return true if args.is_a?(Integer)
         if args.is_a?(Array)
           args.each do |a|
-            return false if !a.kind_of?(String) && !a.kind_of?(Fixnum)
+            return false if !a.kind_of?(String) && !a.kind_of?(Integer)
           end
 
           return true

plugins/pushes/local-exec/config.rb

@@ -63,10 +63,10 @@ module VagrantPlugins
       def args_valid?
         return true if !args
         return true if args.is_a?(String)
-        return true if args.is_a?(Fixnum)
+        return true if args.is_a?(Integer)
         if args.is_a?(Array)
           args.each do |a|
-            return false if !a.kind_of?(String) && !a.kind_of?(Fixnum)
+            return false if !a.kind_of?(String) && !a.kind_of?(Integer)
           end
 
           return true

test/unit/plugins/provisioners/shell/config_test.rb

@@ -30,7 +30,7 @@ describe "VagrantPlugins::Shell::Config" do
       expect(result["shell provisioner"]).to eq([])
     end
 
-    it "passes with fixnum args" do
+    it "passes with integer args" do
       subject.path = file_that_exists
       subject.args = 1
       subject.finalize!
@@ -112,7 +112,7 @@ describe "VagrantPlugins::Shell::Config" do
   end
 
   describe 'finalize!' do
-    it 'changes fixnum args into strings' do
+    it 'changes integer args into strings' do
       subject.path = file_that_exists
       subject.args = 1
       subject.finalize!
@@ -120,7 +120,7 @@ describe "VagrantPlugins::Shell::Config" do
       expect(subject.args).to eq '1'
     end
 
-    it 'changes fixnum args in arrays into strings' do
+    it 'changes integer args in arrays into strings' do
       subject.path = file_that_exists
       subject.args = ["string", 1, 2]
       subject.finalize!

test/unit/plugins/pushes/local-exec/config_test.rb

@@ -70,7 +70,7 @@ describe VagrantPlugins::LocalExecPush::Config do
           expect(errors).to be_empty
         end
 
-        it "passes with fixnum args" do
+        it "passes with integer args" do
           subject.args = 1
           expect(errors).to be_empty
         end
@@ -118,7 +118,7 @@ describe VagrantPlugins::LocalExecPush::Config do
           expect(errors).to be_empty
         end
 
-        it "passes with fixnum args" do
+        it "passes with integer args" do
           subject.args = 1
           expect(errors).to be_empty
         end