$ mutago --workers=1 --exec-timeout=10 --quiet --no-diffs --fail-on-escaped --baseline mutago-baseline.json ./pkg ESCAPED pkg/calc.go:8 (arithmetic/base) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:22 (arithmetic/base) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:13 (branch/if) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:16 (branch/if) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:12 (expression/comparison) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:15 (expression/comparison) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:8 (numbers/decrementer) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:22 (numbers/decrementer) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:4 (numbers/incrementer) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:8 (numbers/incrementer) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:22 (numbers/incrementer) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:8 (statement/return) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:13 (statement/return) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:16 (statement/return) ------------------------------------------------------------------------------------------------------------------------------------------------------ ESCAPED pkg/calc.go:22 (statement/return) ------------------------------------------------------------------------------------------------------------------------------------------------------ The mutation score is 28.57% (6 killed, 15 escaped, 0 errored, 0 not covered, 0 skipped, 21 total) Per-mutator breakdown: arithmetic/base killed 1 / 3 (33%) branch/if killed 0 / 2 (0%) conditional/negated killed 2 / 2 (100%) expression/comparison killed 0 / 2 (0%) numbers/decrementer killed 1 / 3 (33%) numbers/incrementer killed 0 / 3 (0%) statement/return killed 2 / 6 (33%) 4 new mutant(s) escaped — kill them or run --update-baseline to accept exit=4