Make new errors backward compatible #360

Job	Run time
rails_edge	30s
ruby_edge (gemfiles/rails_6_0.gemfile)	19s
Ruby 2.7 (gemfiles/rails_6_0.gemfile)	38s
ruby_edge (gemfiles/rails_6_1.gemfile)	20s
Ruby 2.7 (gemfiles/rails_6_1.gemfile)	37s
ruby_edge (gemfiles/rails_7_0.gemfile)	16s
Ruby 2.7 (gemfiles/rails_7_0.gemfile)	41s
Ruby 3.0 (gemfiles/rails_6_0.gemfile)	32s
Ruby 3.0 (gemfiles/rails_6_1.gemfile)	24s
Ruby 3.0 (gemfiles/rails_7_0.gemfile)	25s
Ruby 3.1 (gemfiles/rails_6_0.gemfile)	28s
Ruby 3.1 (gemfiles/rails_6_1.gemfile)	27s
Ruby 3.1 (gemfiles/rails_7_0.gemfile)	30s
Ruby 3.2 (gemfiles/rails_6_0.gemfile)	24s
Ruby 3.2 (gemfiles/rails_6_1.gemfile)	23s
Ruby 3.2 (gemfiles/rails_7_0.gemfile)	33s
Ruby truffleruby-head (gemfiles/rails_6_0.gemfile)	2m 35s
Ruby truffleruby-head (gemfiles/rails_6_1.gemfile)	2m 24s
Ruby truffleruby-head (gemfiles/rails_7_0.gemfile)	2m 29s
	14m 55s

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