Issue #18058 has been updated by byroot (Jean Boussier).


Here you go:

```
/usr/local/lib/ruby/3.1.0/rubygems/package.rb:698:in `read': buffer error (Zlib::BufError)
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:698:in `block in verify_gz'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:697:in `wrap'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:697:in `verify_gz'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:664:in `verify_entry'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:676:in `block in verify_files'
	from /usr/local/lib/ruby/3.1.0/rubygems/package/tar_reader.rb:65:in `each'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:675:in `verify_files'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:606:in `block (2 levels) in verify'
	from /usr/local/lib/ruby/3.1.0/rubygems/package/tar_reader.rb:27:in `new'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:603:in `block in verify'
	from /usr/local/lib/ruby/3.1.0/rubygems/package/file_source.rb:29:in `open'
	from /usr/local/lib/ruby/3.1.0/rubygems/package/file_source.rb:29:in `with_read_io'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:602:in `verify'
	from /usr/local/lib/ruby/3.1.0/rubygems/package.rb:583:in `spec'
	from /usr/local/lib/ruby/3.1.0/rubygems/installer.rb:269:in `spec'
	from /usr/local/lib/ruby/3.1.0/rubygems/installer.rb:719:in `verify_spec'
	from /usr/local/lib/ruby/3.1.0/rubygems/installer.rb:891:in `pre_install_checks'
	from /usr/local/lib/ruby/3.1.0/rubygems/installer.rb:286:in `install'
	from /usr/local/lib/ruby/3.1.0/rubygems/resolver/specification.rb:104:in `install'
	from /usr/local/lib/ruby/3.1.0/rubygems/request_set.rb:194:in `block in install'
	from /usr/local/lib/ruby/3.1.0/rubygems/request_set.rb:182:in `each'
	from /usr/local/lib/ruby/3.1.0/rubygems/request_set.rb:182:in `install'
	from /usr/local/lib/ruby/3.1.0/rubygems/commands/install_command.rb:210:in `install_gem'
	from /usr/local/lib/ruby/3.1.0/rubygems/commands/install_command.rb:226:in `block in install_gems'
	from /usr/local/lib/ruby/3.1.0/rubygems/commands/install_command.rb:219:in `each'
	from /usr/local/lib/ruby/3.1.0/rubygems/commands/install_command.rb:219:in `install_gems'
	from /usr/local/lib/ruby/3.1.0/rubygems/commands/install_command.rb:167:in `execute'
	from /usr/local/lib/ruby/3.1.0/rubygems/command.rb:323:in `invoke_with_build_args'
	from /usr/local/lib/ruby/3.1.0/rubygems/command_manager.rb:178:in `process_args'
	from /usr/local/lib/ruby/3.1.0/rubygems/command_manager.rb:147:in `run'
	from /usr/local/lib/ruby/3.1.0/rubygems/gem_runner.rb:53:in `run'
	from /usr/local/bin/gem:21:in `<main>'
```

----------------------------------------
Bug #18058: 3.1.0-dev with MJIT enabled Zlib::BufError during `gem install`
https://bugs.ruby-lang.org/issues/18058#change-93093

* Author: byroot (Jean Boussier)
* Status: Open
* Priority: Normal
* Assignee: k0kubun (Takashi Kokubun)
* ruby -v: ruby 3.1.0dev (2021-08-01T00:54:36Z master 605421f4eb) +JIT [x86_64-linux]
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
It doesn't always happen (maybe 5-10% of the cases), but since I added MJIT to our CI builds I've been seeing this error a lot. 

I was able to reproduce it in `docker run -it rubylang/ruby:master-nightly-bionic` after 15 or so tries:

```
# ruby -v
ruby 3.1.0dev (2021-08-01T00:54:36Z master 605421f4eb) [x86_64-linux]
# gem uninstall bundler -v 2.2.21; env RUBYOPT="--enable-jit --jit-max-cache=10000 --jit-min-calls=10 $RUBYOPT" gem install --no-document --user-install bundler -v 2.2.21
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Exception while verifying /usr/local/lib/ruby/gems/3.1.0/cache/bundler-2.2.21.gem
ERROR:  While executing gem ... (Zlib::BufError)
    buffer error
```


e.g.

```
$ docker run -it rubylang/ruby:master-nightly-bionic bash -c 'while env RUBYOPT="--enable-jit --jit-max-cache=10000 --jit-min-calls=10 $RUBYOPT" gem install --no-document --user-install bundler -v 2.2.21; do gem uninstall bundler -v 2.2.21; done'
Fetching bundler-2.2.21.gem
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Successfully installed bundler-2.2.21
1 gem installed
Successfully uninstalled bundler-2.2.21
WARNING:  You don't have /root/.local/share/gem/ruby/3.1.0/bin in your PATH,
	  gem executables will not run.
Exception while verifying /usr/local/lib/ruby/gems/3.1.0/cache/bundler-2.2.21.gem
ERROR:  While executing gem ... (Zlib::BufError)
    buffer error
```



-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request / ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>