Issue #18058 has been updated by k0kubun (Takashi Kokubun). Status changed from Assigned to Closed I replaced the entire implementation in [Feature #19420], and I haven't seen this issue with today's implementation. ---------------------------------------- Bug #18058: 3.1.0-dev with MJIT enabled Zlib::BufError during `gem install` https://bugs.ruby-lang.org/issues/18058#change-102186 * Author: byroot (Jean Boussier) * Status: Closed * 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/