Make new errors backward compatible #364

Job	Run time
rails_edge	23s
ruby_edge (gemfiles/rails_6_0.gemfile)	19s
ruby_edge (gemfiles/rails_6_1.gemfile)	17s
Ruby 2.7 (gemfiles/rails_6_0.gemfile)	39s
ruby_edge (gemfiles/rails_7_0.gemfile)	17s
Ruby 2.7 (gemfiles/rails_6_1.gemfile)	37s
Ruby 2.7 (gemfiles/rails_7_0.gemfile)	45s
Ruby 3.0 (gemfiles/rails_6_0.gemfile)	31s
Ruby 3.0 (gemfiles/rails_6_1.gemfile)	26s
Ruby 3.0 (gemfiles/rails_7_0.gemfile)	26s
Ruby 3.1 (gemfiles/rails_6_0.gemfile)	32s
Ruby 3.1 (gemfiles/rails_6_1.gemfile)	31s
Ruby 3.1 (gemfiles/rails_7_0.gemfile)	26s
Ruby 3.2 (gemfiles/rails_6_0.gemfile)	25s
Ruby 3.2 (gemfiles/rails_6_1.gemfile)	23s
Ruby 3.2 (gemfiles/rails_7_0.gemfile)	24s
Ruby truffleruby-head (gemfiles/rails_6_0.gemfile)	2m 38s
Ruby truffleruby-head (gemfiles/rails_6_1.gemfile)	2m 20s
Ruby truffleruby-head (gemfiles/rails_7_0.gemfile)	2m 25s
	14m 44s

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