Issue #20450 has been updated by hsbt (Hiroshi SHIBATA). Thanks all. I added https://github.com/ruby/ruby/pull/10619 to [backport PR](https://github.com/ruby/ruby/pull/10354). Sorry to your inconvenient experience for new stable version. https://bugs.ruby-lang.org/issues/20450#note-6 or https://github.com/ruby/ruby/pull/10619#issuecomment-2075896240 are good to temporary workaround for this issue until 3.3.2 release. ---------------------------------------- Bug #20450: Ruby 3.3.1 broken with bootsnap https://bugs.ruby-lang.org/issues/20450#change-108111 * Author: philippe.bs.noel@tutanota.com (Philippe Noel) * Status: Closed * Assignee: hsbt (Hiroshi SHIBATA) * ruby -v: ruby 3.3.1 (2024-04-23 revision c56cd86388) [x86_64-linux] * Backport: 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED ---------------------------------------- The issue looks like https://bugs.ruby-lang.org/issues/20060 With the new release of ruby 3.1.1, bootsnap does not work anymore. ``` bin/rails aborted! ArgumentError: comparison of String with nil failed (ArgumentError) msg = " #{RUBY_VERSION < SINCE[gem] ? "will no longer be" : "is not"} part of the default gems since Ruby #{SINCE[gem]}." ^^^^^^^^^^ /usr/local/bundle/gems/bootsnap-1.18.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require' ``` It's working with DISABLE_BOOTSNAP=1 with the following message : `warning: parser/current is loading parser/ruby33, which recognizes 3.3.0-compliant syntax, but you are running 3.3.1.` -- https://bugs.ruby-lang.org/