Ruby

Bundler and gem failures in CI - resolved.

Fix Ruby CI failures: bundler dependency conflicts, native gem build errors, version mismatches, and platform problems. Clear fixes for bundle install and gem pipelines.

Bundler

Version conflicts, sources, and lockfiles.

"Could not locate Gemfile"Fix Bundler "Could not locate Gemfile" / "Could not locate Gemfile or .bundle/ directory" in CI - the step "frozen ... Gemfile changed"Fix Bundler "the dependencies in your Gemfile changed" in frozen/deployment mode - the Gemfile was edited frozen after editFix Bundler refusing to install after a Gemfile edit because frozen mode forbids lockfile changes - re-lock missing platform gemFix Bundler errors when Gemfile.lock lacks the x86_64-linux platform in CI - add the platform with bundle

Versions & platform

Ruby version and platform mismatches.

"wrong number of arguments"Fix "ArgumentError: wrong number of arguments (given N, expected M)" in Ruby CI - a method was called with Bundler version mismatchFix Bundler version mismatches in CI when the lockfile’s BUNDLED WITH differs from the installed Bundler - "frozen String"Fix "FrozenError: can't modify frozen String" in Ruby 3 CI - code mutates a string literal that is frozen, "ActionView::Template::Error" (asset)Fix Rails "ActionView::Template::Error: Asset `application.css` was not declared to be precompiled" / not "Could not find bundler (X)"Fix "Could not find 'bundler' (2.5.6) required by your /path/Gemfile.lock" in CI - install the exact Bundler

Explore other topics

GitHub ActionsWorkflow, runner, and YAML errors - diagnosed and fixed. Node.js & npmnpm, yarn, and pnpm failures in CI - solved. DockerBuild, run, compose, and registry errors - explained. Pythonpip, poetry, venv, and pytest failures - fixed. Java & JVMMaven, Gradle, and JVM failures in CI - resolved. GoGo build, module, and test failures - diagnosed.