Use vendored timeout from RubyGems

Manifest.txt

@@ -337,6 +337,7 @@ bundler/lib/bundler/vendored_net_http.rb
 bundler/lib/bundler/vendored_persistent.rb
 bundler/lib/bundler/vendored_pub_grub.rb
 bundler/lib/bundler/vendored_thor.rb
+bundler/lib/bundler/vendored_timeout.rb
 bundler/lib/bundler/vendored_tsort.rb
 bundler/lib/bundler/vendored_uri.rb
 bundler/lib/bundler/version.rb

Rakefile

@@ -206,6 +206,15 @@ if File.exist?("tool/automatiek.rake")
       sublib.prefix = "Bundler"
       sublib.vendor_lib = "bundler/lib/bundler/vendor/connection_pool"
       sublib.license_path = "LICENSE"
+
+      sublib.dependency("timeout") do |subsublib|
+        subsublib.version = "v0.4.1"
+        subsublib.download = { github: "https://github.com/ruby/timeout" }
+        subsublib.namespace = "Timeout"
+        subsublib.prefix = "Gem"
+        subsublib.vendor_lib = "lib/rubygems/timeout"
+        subsublib.license_path = "License.txt"
+      end
     end
 
     lib.dependency("uri") do |sublib|

bundler/lib/bundler/fetcher.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require_relative "vendored_persistent"
+require_relative "vendored_timeout"
 require "cgi"
 require "securerandom"
 require "zlib"
@@ -287,7 +288,7 @@ def gemspec_cached_path(spec_file_name)
     end
 
     HTTP_ERRORS = [
-      Timeout::Error, EOFError, SocketError, Errno::ENETDOWN, Errno::ENETUNREACH,
+      Gem::Timeout::Error, EOFError, SocketError, Errno::ENETDOWN, Errno::ENETUNREACH,
       Errno::EINVAL, Errno::ECONNRESET, Errno::ETIMEDOUT, Errno::EAGAIN,
       Gem::Net::HTTPBadResponse, Gem::Net::HTTPHeaderSyntaxError, Gem::Net::ProtocolError,
       Gem::Net::HTTP::Persistent::Error, Zlib::BufError, Errno::EHOSTUNREACH

bundler/lib/bundler/vendor/connection_pool/lib/connection_pool.rb

@@ -1,12 +1,12 @@
-require "timeout"
+require_relative "../../../vendored_timeout"
 require_relative "connection_pool/version"
 
 class Bundler::ConnectionPool
   class Error < ::RuntimeError; end
 
   class PoolShuttingDownError < ::Bundler::ConnectionPool::Error; end
 
-  class TimeoutError < ::Timeout::Error; end
+  class TimeoutError < ::Gem::Timeout::Error; end
 end
 
 # Generic connection pool class for sharing a limited number of objects or network connections

bundler/lib/bundler/vendored_timeout.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+begin
+  require "rubygems/timeout"
+rescue LoadError
+  require "timeout"
+  Gem::Timeout = Timeout
+end