Fix sanitization of backtraces in tests. #664

Job	Run time
rubocop	15s
nixfmt	14s
rspec-matrix (3.0, 3.8)	44s
actionlint	5s
rspec-matrix (3.0, 3.9)	50s
rspec-matrix (3.0, 3.10)	50s
yard	11s
rspec-matrix (3.0, 3.11)	47s
rspec-matrix (3.0, 3.12)	43s
rspec-matrix (3.1, 3.8)	44s
rspec-matrix (3.1, 3.9)	45s
rspec-matrix (3.1, 3.10)	47s
rspec-matrix (3.1, 3.11)	1m 3s
rspec-matrix (3.1, 3.12)	50s
rspec-matrix (3.2, 3.8)	1m 19s
rspec-matrix (3.2, 3.9)	53s
rspec-matrix (3.2, 3.10)	44s
rspec-matrix (3.2, 3.11)	54s
rspec-matrix (3.2, 3.12)	51s
rspec-matrix (3.3, 3.8)	50s
rspec-matrix (3.3, 3.9)	54s
rspec-matrix (3.3, 3.10)	55s
rspec-matrix (3.3, 3.11)	44s
rspec-matrix (3.3, 3.12)	1m 8s
rspec-github-workflow-wrapup-helper	1s
collate-coverage	10s
rspec	1s
	18m 12s

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