Ruby gem warnings ProtocRetryError URI version conflict gem dependencies

Dealing with Ruby Gem Warnings: ProtocRetryError and URI Version Conflict

When working with Ruby and managing gem dependencies, you might encounter warning messages related to constants being reinitialized and version conflicts. These warnings can arise from gem dependencies like net-http, causing potential issues in your application. In this guide, we’ll explore common warnings and their resolutions.

1. Warning: Already Initialized Constant ProtocRetryError

/Users/username/.rbenv/versions/2.7.7/lib/ruby/2.7.0/net/protocol.rb:66: warning: already initialized constant Net::ProtocRetryError
/Users/username/.rbenv/versions/2.7.7/lib/ruby/gems/2.7.0/gems/net-protocol-0.2.1/lib/net/protocol.rb:68: warning: previous definition of ProtocRetryError was here

Cause

The gem net-http is defined as a dependency for multiple gems, such as faraday, net-ssh, and net-protocol. Consequently, loading these gems multiple times can result in constant reinitialization warnings.

Solution

Explicitly adding the net-http gem to your Gemfile can suppress these warnings.

gem 'net-http', '0.3.2' # Explicitly added to suppress warnings

2. Warning: Version Conflict with URI

/opt/xx/Ruby/2.7.7/x64/lib/ruby/gems/2.7.0/gems/bundler-2.4.6/lib/bundler/runtime.rb:304:in `check_for_activated_spec!': You have already activated uri 0.10.0, but your Gemfile requires uri 0.12.0. Since uri is a default gem, you can either remove your dependency on it or try updating to a newer version of bundler that supports uri as a default gem. (Gem::LoadError)

Cause

This warning arises due to a conflict between different versions of the uri gem installed on your system, often encountered in continuous integration (CI) setups.

Solution

To resolve this conflict, specify the uri gem version compatible with your setup in your Gemfile.

gem 'net-http', '0.3.2' # Explicitly added to suppress warnings
gem 'uri', '0.10.0'

These solutions help ensure a smooth gem dependency resolution process, avoiding potential conflicts and warnings in your Ruby application. Stay vigilant about gem versions to maintain a robust and error-free development environment.