Caused by:
<no message> (java.lang.NullPointerException)
	from org.truffleruby.core.hash.library.PackedHashStoreLibrary.getHashed(PackedHashStoreLibrary.java:78)
	from org.truffleruby.core.hash.library.PackedHashStoreLibrary$LookupPackedEntryNode.getPackedArray(PackedHashStoreLibrary.java:485)
	from org.truffleruby.core.hash.library.PackedHashStoreLibraryFactory$LookupPackedEntryNodeGen.execute(PackedHashStoreLibraryFactory.java:140)
	from org.truffleruby.core.hash.library.PackedHashStoreLibrary.lookupOrDefault(PackedHashStoreLibrary.java:176)
	from org.truffleruby.core.hash.library.PackedHashStoreLibraryGen$HashStoreLibraryExports$Cached.lookupOrDefault(PackedHashStoreLibraryGen.java:443)
	from org.truffleruby.core.hash.HashNodes$GetIndexNode.get(HashNodes.java:209)
	from org.truffleruby.core.hash.HashNodesFactory$GetIndexNodeFactory$GetIndexNodeGen.execute(HashNodesFactory.java:671)
	from org.truffleruby.language.RubyCoreMethodRootNode.execute(RubyCoreMethodRootNode.java:58)
/home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/visitor.rb:30:in `[]'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/visitor.rb:30:in `visit'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/visitor.rb:6:in `accept'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/to_ruby.rb:35:in `accept'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/to_ruby.rb:346:in `block in revive_hash'
	from <internal:core> core/enumerable.rb:695:in `block in each_slice'
	from <internal:core> core/enumerable.rb:691:in `each'
	from <internal:core> core/enumerable.rb:691:in `each_slice'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/to_ruby.rb:345:in `revive_hash'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/to_ruby.rb:169:in `visit_Psych_Nodes_Mapping'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/visitor.rb:30:in `visit'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/visitor.rb:6:in `accept'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/to_ruby.rb:35:in `accept'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/to_ruby.rb:320:in `visit_Psych_Nodes_Document'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/visitor.rb:30:in `visit'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/visitor.rb:6:in `accept'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych/visitors/to_ruby.rb:35:in `accept'
	from /home/runner/.rubies/truffleruby-head/lib/mri/psych.rb:334:in `safe_load'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/safe_yaml.rb:38:in `safe_load'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package.rb:562:in `block (2 levels) in read_checksums'
	from /home/runner/.rubies/truffleruby-head/lib/truffle/truffle/cext.rb:1280:in `rb_yield'
	from call.c:103:in `rb_yield'
	from /home/runner/.rubies/truffleruby-head/lib/truffle/truffle/cext.rb:1871:in `rb_ensure'
	from exception.c:115:in `rb_ensure'
	from /home/runner/.rubies/truffleruby-head/lib/truffle/truffle/cext_ruby.rb:39:in `wrap'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package.rb:561:in `block in read_checksums'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package/tar_reader.rb:95:in `seek'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package.rb:560:in `read_checksums'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package.rb:620:in `block (2 levels) in verify'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package/tar_reader.rb:25:in `new'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package.rb:619:in `block in verify'
	from <internal:core> core/io.rb:576:in `open'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package/file_source.rb:30:in `with_read_io'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package.rb:618:in `verify'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/package.rb:599:in `spec'
	from /home/runner/.rubies/truffleruby-head/lib/mri/rubygems/installer.rb:275:in `spec'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/rubygems_gem_installer.rb:134:in `spec'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/source/rubygems.rb:186:in `install'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/installer/gem_installer.rb:55:in `install'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/installer/gem_installer.rb:17:in `install_from_spec'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/installer/parallel_installer.rb:133:in `do_install'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/installer/parallel_installer.rb:124:in `block in worker_pool'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/worker.rb:62:in `apply_func'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/worker.rb:57:in `block in process_queue'
	from <internal:core> core/kernel.rb:417:in `loop'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/worker.rb:54:in `process_queue'
	from /home/runner/.rubies/truffleruby-head/lib/mri/bundler/worker.rb:90:in `block (2 levels) in create_threads'