[rubygems/rubygems] Don't serialize gemspec in the cache location

Now that the cache location is not used as the install location, this is
unnecessary, and it also prevents `bundle install` with a per app cache
loading code from two different locations, causing annoying warnings
like:

```
Fetching gem metadata from https://rubygems.org/...
Fetching https://github.com/puma/puma.git
Using nio4r 2.5.4
Using bundler 2.3.0.dev
Using puma 5.0.4 from https://github.com/puma/puma.git (at master@ea81fba)
Bundle complete! 1 Gemfile dependency, 3 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
Updating files in vendor/cache
  * nio4r-2.5.4.gem
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:18: warning: already initialized constant Puma::HTTP_STATUS_CODES
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:18: warning: previous definition of HTTP_STATUS_CODES was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:84: warning: already initialized constant Puma::STATUS_WITH_NO_ENTITY_BODY
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:84: warning: previous definition of STATUS_WITH_NO_ENTITY_BODY was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:103: warning: already initialized constant Puma::Const::VERSION
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:103: warning: previous definition of VERSION was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:103: warning: already initialized constant Puma::Const::PUMA_VERSION
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:103: warning: previous definition of PUMA_VERSION was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:104: warning: already initialized constant Puma::Const::CODE_NAME
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:104: warning: previous definition of CODE_NAME was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:106: warning: already initialized constant Puma::Const::PUMA_SERVER_STRING
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:106: warning: previous definition of PUMA_SERVER_STRING was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:108: warning: already initialized constant Puma::Const::FAST_TRACK_KA_TIMEOUT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:108: warning: previous definition of FAST_TRACK_KA_TIMEOUT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:112: warning: already initialized constant Puma::Const::PERSISTENT_TIMEOUT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:112: warning: previous definition of PERSISTENT_TIMEOUT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:116: warning: already initialized constant Puma::Const::FIRST_DATA_TIMEOUT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:116: warning: previous definition of FIRST_DATA_TIMEOUT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:120: warning: already initialized constant Puma::Const::WRITE_TIMEOUT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:120: warning: previous definition of WRITE_TIMEOUT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:127: warning: already initialized constant Puma::Const::MAX_FAST_INLINE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:127: warning: previous definition of MAX_FAST_INLINE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:130: warning: already initialized constant Puma::Const::REQUEST_URI
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:130: warning: previous definition of REQUEST_URI was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:131: warning: already initialized constant Puma::Const::REQUEST_PATH
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:131: warning: previous definition of REQUEST_PATH was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:132: warning: already initialized constant Puma::Const::QUERY_STRING
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:132: warning: previous definition of QUERY_STRING was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:133: warning: already initialized constant Puma::Const::CONTENT_LENGTH
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:133: warning: previous definition of CONTENT_LENGTH was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:135: warning: already initialized constant Puma::Const::PATH_INFO
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:135: warning: previous definition of PATH_INFO was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:137: warning: already initialized constant Puma::Const::PUMA_TMP_BASE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:137: warning: previous definition of PUMA_TMP_BASE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:139: warning: already initialized constant Puma::Const::ERROR_RESPONSE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:139: warning: previous definition of ERROR_RESPONSE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:153: warning: already initialized constant Puma::Const::CHUNK_SIZE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:153: warning: previous definition of CHUNK_SIZE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:157: warning: already initialized constant Puma::Const::MAX_HEADER
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:157: warning: previous definition of MAX_HEADER was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:160: warning: already initialized constant Puma::Const::MAX_BODY
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:160: warning: previous definition of MAX_BODY was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:162: warning: already initialized constant Puma::Const::REQUEST_METHOD
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:162: warning: previous definition of REQUEST_METHOD was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:163: warning: already initialized constant Puma::Const::HEAD
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:163: warning: previous definition of HEAD was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:165: warning: already initialized constant Puma::Const::LINE_END
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:165: warning: previous definition of LINE_END was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:166: warning: already initialized constant Puma::Const::REMOTE_ADDR
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:166: warning: previous definition of REMOTE_ADDR was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:167: warning: already initialized constant Puma::Const::HTTP_X_FORWARDED_FOR
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:167: warning: previous definition of HTTP_X_FORWARDED_FOR was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:168: warning: already initialized constant Puma::Const::HTTP_X_FORWARDED_SSL
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:168: warning: previous definition of HTTP_X_FORWARDED_SSL was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:169: warning: already initialized constant Puma::Const::HTTP_X_FORWARDED_SCHEME
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:169: warning: previous definition of HTTP_X_FORWARDED_SCHEME was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:170: warning: already initialized constant Puma::Const::HTTP_X_FORWARDED_PROTO
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:170: warning: previous definition of HTTP_X_FORWARDED_PROTO was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:172: warning: already initialized constant Puma::Const::SERVER_NAME
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:172: warning: previous definition of SERVER_NAME was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:173: warning: already initialized constant Puma::Const::SERVER_PORT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:173: warning: previous definition of SERVER_PORT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:174: warning: already initialized constant Puma::Const::HTTP_HOST
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:174: warning: previous definition of HTTP_HOST was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:175: warning: already initialized constant Puma::Const::PORT_80
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:175: warning: previous definition of PORT_80 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:176: warning: already initialized constant Puma::Const::PORT_443
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:176: warning: previous definition of PORT_443 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:177: warning: already initialized constant Puma::Const::LOCALHOST
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:177: warning: previous definition of LOCALHOST was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:178: warning: already initialized constant Puma::Const::LOCALHOST_IP
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:178: warning: previous definition of LOCALHOST_IP was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:180: warning: already initialized constant Puma::Const::SERVER_PROTOCOL
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:180: warning: previous definition of SERVER_PROTOCOL was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:181: warning: already initialized constant Puma::Const::HTTP_11
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:181: warning: previous definition of HTTP_11 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:183: warning: already initialized constant Puma::Const::SERVER_SOFTWARE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:183: warning: previous definition of SERVER_SOFTWARE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:184: warning: already initialized constant Puma::Const::GATEWAY_INTERFACE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:184: warning: previous definition of GATEWAY_INTERFACE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:185: warning: already initialized constant Puma::Const::CGI_VER
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:185: warning: previous definition of CGI_VER was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:187: warning: already initialized constant Puma::Const::STOP_COMMAND
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:187: warning: previous definition of STOP_COMMAND was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:188: warning: already initialized constant Puma::Const::HALT_COMMAND
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:188: warning: previous definition of HALT_COMMAND was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:189: warning: already initialized constant Puma::Const::RESTART_COMMAND
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:189: warning: previous definition of RESTART_COMMAND was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:191: warning: already initialized constant Puma::Const::RACK_INPUT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:191: warning: previous definition of RACK_INPUT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:192: warning: already initialized constant Puma::Const::RACK_URL_SCHEME
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:192: warning: previous definition of RACK_URL_SCHEME was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:193: warning: already initialized constant Puma::Const::RACK_AFTER_REPLY
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:193: warning: previous definition of RACK_AFTER_REPLY was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:194: warning: already initialized constant Puma::Const::PUMA_SOCKET
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:194: warning: previous definition of PUMA_SOCKET was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:195: warning: already initialized constant Puma::Const::PUMA_CONFIG
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:195: warning: previous definition of PUMA_CONFIG was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:196: warning: already initialized constant Puma::Const::PUMA_PEERCERT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:196: warning: previous definition of PUMA_PEERCERT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:198: warning: already initialized constant Puma::Const::HTTP
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:198: warning: previous definition of HTTP was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:199: warning: already initialized constant Puma::Const::HTTPS
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:199: warning: previous definition of HTTPS was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:201: warning: already initialized constant Puma::Const::HTTPS_KEY
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:201: warning: previous definition of HTTPS_KEY was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:203: warning: already initialized constant Puma::Const::HTTP_VERSION
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:203: warning: previous definition of HTTP_VERSION was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:204: warning: already initialized constant Puma::Const::HTTP_CONNECTION
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:204: warning: previous definition of HTTP_CONNECTION was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:205: warning: already initialized constant Puma::Const::HTTP_EXPECT
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:205: warning: previous definition of HTTP_EXPECT was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:206: warning: already initialized constant Puma::Const::CONTINUE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:206: warning: previous definition of CONTINUE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:208: warning: already initialized constant Puma::Const::HTTP_11_100
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:208: warning: previous definition of HTTP_11_100 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:209: warning: already initialized constant Puma::Const::HTTP_11_200
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:209: warning: previous definition of HTTP_11_200 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:210: warning: already initialized constant Puma::Const::HTTP_10_200
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:210: warning: previous definition of HTTP_10_200 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:212: warning: already initialized constant Puma::Const::CLOSE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:212: warning: previous definition of CLOSE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:213: warning: already initialized constant Puma::Const::KEEP_ALIVE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:213: warning: previous definition of KEEP_ALIVE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:215: warning: already initialized constant Puma::Const::CONTENT_LENGTH2
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:215: warning: previous definition of CONTENT_LENGTH2 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:216: warning: already initialized constant Puma::Const::CONTENT_LENGTH_S
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:216: warning: previous definition of CONTENT_LENGTH_S was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:217: warning: already initialized constant Puma::Const::TRANSFER_ENCODING
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:217: warning: previous definition of TRANSFER_ENCODING was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:218: warning: already initialized constant Puma::Const::TRANSFER_ENCODING2
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:218: warning: previous definition of TRANSFER_ENCODING2 was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:220: warning: already initialized constant Puma::Const::CONNECTION_CLOSE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:220: warning: previous definition of CONNECTION_CLOSE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:221: warning: already initialized constant Puma::Const::CONNECTION_KEEP_ALIVE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:221: warning: previous definition of CONNECTION_KEEP_ALIVE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:223: warning: already initialized constant Puma::Const::TRANSFER_ENCODING_CHUNKED
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:223: warning: previous definition of TRANSFER_ENCODING_CHUNKED was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:224: warning: already initialized constant Puma::Const::CLOSE_CHUNKED
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:224: warning: previous definition of CLOSE_CHUNKED was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:226: warning: already initialized constant Puma::Const::CHUNKED
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:226: warning: previous definition of CHUNKED was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:228: warning: already initialized constant Puma::Const::COLON
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:228: warning: previous definition of COLON was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:230: warning: already initialized constant Puma::Const::NEWLINE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:230: warning: previous definition of NEWLINE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:232: warning: already initialized constant Puma::Const::HIJACK_P
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:232: warning: previous definition of HIJACK_P was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:233: warning: already initialized constant Puma::Const::HIJACK
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:233: warning: previous definition of HIJACK was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:234: warning: already initialized constant Puma::Const::HIJACK_IO
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:234: warning: previous definition of HIJACK_IO was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:236: warning: already initialized constant Puma::Const::EARLY_HINTS
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:236: warning: previous definition of EARLY_HINTS was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:239: warning: already initialized constant Puma::Const::WORKER_CHECK_INTERVAL
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:239: warning: previous definition of WORKER_CHECK_INTERVAL was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:242: warning: already initialized constant Puma::Const::DQUOTE
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:242: warning: previous definition of DQUOTE was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:243: warning: already initialized constant Puma::Const::HTTP_HEADER_DELIMITER
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:243: warning: previous definition of HTTP_HEADER_DELIMITER was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:244: warning: already initialized constant Puma::Const::ILLEGAL_HEADER_KEY_REGEX
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:244: warning: previous definition of ILLEGAL_HEADER_KEY_REGEX was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:245: warning: already initialized constant Puma::Const::ILLEGAL_HEADER_VALUE_REGEX
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:245: warning: previous definition of ILLEGAL_HEADER_VALUE_REGEX was here
/home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce/lib/puma/const.rb:248: warning: already initialized constant Puma::Const::BANNED_HEADER_KEY
/home/deivid/.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/bundler/gems/puma-ea81fba045ce/lib/puma/const.rb:248: warning: previous definition of BANNED_HEADER_KEY was here
Using bundler 2.3.0.dev
Using nio4r 2.5.4
Using puma 5.0.4 from https://github.com/puma/puma.git (at /home/deivid/Code/playground/bundler_cache_bug/vendor/cache/puma-ea81fba045ce@ea81fba)
Updating files in vendor/cache
Bundle complete! 1 Gemfile dependency, 3 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
```

https://github.com/rubygems/rubygems/commit/039d9fb2cd

lib/bundler/source/git.rb

@@ -223,7 +223,6 @@ module Bundler
         FileUtils.rm_rf(app_cache_path)
         git_proxy.checkout if requires_checkout?
         git_proxy.copy_to(app_cache_path, @submodules)
-        serialize_gemspecs_in(app_cache_path)
       end
 
       def load_spec_files

spec/bundler/cache/git_spec.rb

@@ -238,26 +238,6 @@ RSpec.describe "bundle cache with git" do
     expect(the_bundle).to include_gems "has_submodule 1.0"
   end
 
-  it "caches pre-evaluated gemspecs" do
-    git = build_git "foo"
-
-    # Insert a gemspec method that shells out
-    spec_lines = lib_path("foo-1.0/foo.gemspec").read.split("\n")
-    spec_lines.insert(-2, "s.description = `echo bob`")
-    update_git("foo") {|s| s.write "foo.gemspec", spec_lines.join("\n") }
-
-    install_gemfile <<-G
-      source "https://gem.repo1"
-      gem "foo", :git => '#{lib_path("foo-1.0")}'
-    G
-    bundle "config set cache_all true"
-    bundle :cache
-
-    ref = git.ref_for("main", 11)
-    gemspec = bundled_app("vendor/cache/foo-1.0-#{ref}/foo.gemspec").read
-    expect(gemspec).to_not match("`echo bob`")
-  end
-
   it "can install after bundle cache with git not installed" do
     build_git "foo"