Issue #11759 has been reported by Mike Perham. ---------------------------------------- Bug #11759: URI breaks with frozen strings https://bugs.ruby-lang.org/issues/11759 * Author: Mike Perham * Status: Open * Priority: Normal * Assignee: * ruby -v: 2.3.0-preview1 * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN ---------------------------------------- It appears URI uses String mutation and breaks frozen string mode. ~~~ $ RUBYOPT="--enable-frozen-string-literal" bundle exec rake /Users/mike/.rubies/ruby-2.3.0-preview1/lib/ruby/2.3.0/uri/generic.rb:1344:in `to_s': can't modify frozen String (RuntimeError) /Users/mike/.gem/ruby/2.3.0/gems/bundler-1.10.6/lib/bundler/source/rubygems.rb:257:in `normalize_uri' /Users/mike/.gem/ruby/2.3.0/gems/bundler-1.10.6/lib/bundler/source/rubygems.rb:198:in `add_remote' /Users/mike/.gem/ruby/2.3.0/gems/bundler-1.10.6/lib/bundler/source/rubygems.rb:25:in `block in initialize' /Users/mike/.gem/ruby/2.3.0/gems/bundler-1.10.6/lib/bundler/source/rubygems.rb:25:in `reverse_each' /Users/mike/.gem/ruby/2.3.0/gems/bundler-1.10.6/lib/bundler/source/rubygems.rb:25:in `initialize' ~~~ -- https://bugs.ruby-lang.org/