Revert "Merge pull request #1810 from meanphil/mappings-slow-exception" #127

Job	Run time
test (Gemfile, 3.3)	1m 12s
test (Gemfile, 3.2)	19s
test (Gemfile, 3.1)	20s
test (Gemfile, 3.0)	19s
test (Gemfile, 2.7)	37s
test (gemfiles/Gemfile-rails-main, 3.3)	23s
test (gemfiles/Gemfile-rails-main, 3.2)	23s
test (gemfiles/Gemfile-rails-main, 3.1)	42s
test (gemfiles/Gemfile-rails-7-0, 3.3)	13s
test (gemfiles/Gemfile-rails-7-0, 3.2)	13s
test (gemfiles/Gemfile-rails-7-0, 3.1)	16s
test (gemfiles/Gemfile-rails-7-0, 3.0)	16s
test (gemfiles/Gemfile-rails-7-0, 2.7)	30s
test (gemfiles/Gemfile-rails-6-1, 3.3)	13s
test (gemfiles/Gemfile-rails-6-1, 3.2)	12s
test (gemfiles/Gemfile-rails-6-1, 3.1)	50s
test (gemfiles/Gemfile-rails-6-1, 3.0)	13s
test (gemfiles/Gemfile-rails-6-1, 2.7)	27s
test (gemfiles/Gemfile-rails-6-1, 2.6)	27s
test (gemfiles/Gemfile-rails-6-1, 2.5)	30s
test (gemfiles/Gemfile-rails-6-0, 3.0)	14s
test (gemfiles/Gemfile-rails-6-0, 2.7)	26s
test (gemfiles/Gemfile-rails-6-0, 2.6)	27s
test (gemfiles/Gemfile-rails-6-0, 2.5)	26s
test (gemfiles/Gemfile-rails-5-2, 2.6)	26s
test (gemfiles/Gemfile-rails-5-2, 2.5)	27s
	11m 1s

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