Rake fails to build docset with syntax error

[svetlyak40wt]

Here is an output of the rake:

 > [12/12] RUN rake:                                                                                                                          
#16 1.329 rake aborted!                                                                                                                       
#16 1.330 SyntaxError: /stage/Rakefile:34: syntax error, unexpected ')', expecting local variable or method                                   
#16 1.330 def read_table(table, &)                                                                                                            
#16 1.330                        ^                                                                                                            
#16 1.330 /stage/Rakefile:60: syntax error, unexpected `end', expecting end-of-input
#16 1.330 /var/lib/gems/3.0.0/gems/rake-13.1.0/exe/rake:27:in `<top (required)>'
#16 1.330 (See full trace by running task with --trace)
------
executor failed running [/bin/sh -c rake]: exit code: 1

Rake version:

rake --version
rake, version 13.1.0

Ruby version:

ruby --version
ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-linux-gnu]

[knu]

I am a Ruby developer, so I use the latest language features without hesitation. 😇
Try images like https://registry.hub.docker.com/r/rubylang/ruby or https://registry.hub.docker.com/_/ruby.