FAILURE MAP

Understand the failure.
Verify the repair.

Small, reproducible software failures. The broken implementation, the fix that didn’t work, and the one that passed—preserved together.

Explore the cases ↓How results are verified ↗
100840Executable case variants
20168Distinct failure mechanisms
302520Executed implementations
20168Open-access cases

WHAT THE ARCHIVE CONTAINS

100840 executable cases. 20168 are open.

Every case records the implementation that fails, the fix that did not work, and the repair that passed its checks—with recorded outputs and source hashes. This release adds 100840 cases across 20168 failure mechanisms and 254 domains.

The open tier gives you the failure and the unsuccessful fix for one case in every mechanism. The remaining 80672 cases, 5 variants per mechanism, are member-only: the verified repair, its recorded checks, and the full fixture suite are held in the member archive. Read the methodology ↗

A RECORD OF WHAT WENT WRONG

Browse the archive / 100840

Python · Standard library
REFERENCEFAILURE MECHANISMDOMAINACCESS
FA-55501

Refraction coordinate status: Refraction is applied away from the zenith · case 01

The adapter reports an incorrect observed zenith while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55502

Refraction coordinate status: Refraction is applied away from the zenith · case 02

The adapter reports an incorrect observed zenith while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55503

Refraction coordinate status: Refraction is applied away from the zenith · case 03

The adapter reports an incorrect observed zenith while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55504

Refraction coordinate status: Refraction is applied away from the zenith · case 04

The adapter reports an incorrect observed zenith while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55505

Refraction coordinate status: Refraction is applied away from the zenith · case 05

The adapter reports an incorrect observed zenith while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55506

Refraction coordinate status: Altitude adapter reuses the zenith-distance sign and complement · case 01

The adapter reports an incorrect observed altitude while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55507

Refraction coordinate status: Altitude adapter reuses the zenith-distance sign and complement · case 02

The adapter reports an incorrect observed altitude while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55508

Refraction coordinate status: Altitude adapter reuses the zenith-distance sign and complement · case 03

The adapter reports an incorrect observed altitude while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55509

Refraction coordinate status: Altitude adapter reuses the zenith-distance sign and complement · case 04

The adapter reports an incorrect observed altitude while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55510

Refraction coordinate status: Altitude adapter reuses the zenith-distance sign and complement · case 05

The adapter reports an incorrect observed altitude while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55511

Refraction coordinate status: Reference-pressure refraction scaling inverts the pressure ratio · case 01

The adapter reports an incorrect pressure displacement while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55512

Refraction coordinate status: Reference-pressure refraction scaling inverts the pressure ratio · case 02

The adapter reports an incorrect pressure displacement while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55513

Refraction coordinate status: Reference-pressure refraction scaling inverts the pressure ratio · case 03

The adapter reports an incorrect pressure displacement while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55514

Refraction coordinate status: Reference-pressure refraction scaling inverts the pressure ratio · case 04

The adapter reports an incorrect pressure displacement while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55515

Refraction coordinate status: Reference-pressure refraction scaling inverts the pressure ratio · case 05

The adapter reports an incorrect pressure displacement while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55516

Refraction coordinate status: An already refracted coordinate receives a duplicate atmospheric displacement · case 01

The adapter reports an incorrect apply once while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55517

Refraction coordinate status: An already refracted coordinate receives a duplicate atmospheric displacement · case 02

The adapter reports an incorrect apply once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55518

Refraction coordinate status: An already refracted coordinate receives a duplicate atmospheric displacement · case 03

The adapter reports an incorrect apply once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55519

Refraction coordinate status: An already refracted coordinate receives a duplicate atmospheric displacement · case 04

The adapter reports an incorrect apply once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55520

Refraction coordinate status: An already refracted coordinate receives a duplicate atmospheric displacement · case 05

The adapter reports an incorrect apply once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55521

Refraction coordinate status: Inverse atmospheric coordinate adapter repeats forward refraction · case 01

The adapter reports an incorrect true zenith from observed while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55522

Refraction coordinate status: Inverse atmospheric coordinate adapter repeats forward refraction · case 02

The adapter reports an incorrect true zenith from observed while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55523

Refraction coordinate status: Inverse atmospheric coordinate adapter repeats forward refraction · case 03

The adapter reports an incorrect true zenith from observed while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55524

Refraction coordinate status: Inverse atmospheric coordinate adapter repeats forward refraction · case 04

The adapter reports an incorrect true zenith from observed while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55525

Refraction coordinate status: Inverse atmospheric coordinate adapter repeats forward refraction · case 05

The adapter reports an incorrect true zenith from observed while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55526

Refraction coordinate status: Vacuum-coordinate export removes refraction from unrefracted inputs · case 01

The adapter reports an incorrect vacuum requested while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55527

Refraction coordinate status: Vacuum-coordinate export removes refraction from unrefracted inputs · case 02

The adapter reports an incorrect vacuum requested while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55528

Refraction coordinate status: Vacuum-coordinate export removes refraction from unrefracted inputs · case 03

The adapter reports an incorrect vacuum requested while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55529

Refraction coordinate status: Vacuum-coordinate export removes refraction from unrefracted inputs · case 04

The adapter reports an incorrect vacuum requested while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55530

Refraction coordinate status: Vacuum-coordinate export removes refraction from unrefracted inputs · case 05

The adapter reports an incorrect vacuum requested while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55531

Aberration correction provenance: Geocentric apparent place incorrectly includes site-dependent diurnal aberration · case 01

The adapter reports an incorrect geocentric apparent while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55532

Aberration correction provenance: Geocentric apparent place incorrectly includes site-dependent diurnal aberration · case 02

The adapter reports an incorrect geocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55533

Aberration correction provenance: Geocentric apparent place incorrectly includes site-dependent diurnal aberration · case 03

The adapter reports an incorrect geocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55534

Aberration correction provenance: Geocentric apparent place incorrectly includes site-dependent diurnal aberration · case 04

The adapter reports an incorrect geocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55535

Aberration correction provenance: Geocentric apparent place incorrectly includes site-dependent diurnal aberration · case 05

The adapter reports an incorrect geocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55536

Aberration correction provenance: Topocentric apparent place omits one supplied physical correction · case 01

The adapter reports an incorrect topocentric apparent while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55537

Aberration correction provenance: Topocentric apparent place omits one supplied physical correction · case 02

The adapter reports an incorrect topocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55538

Aberration correction provenance: Topocentric apparent place omits one supplied physical correction · case 03

The adapter reports an incorrect topocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55539

Aberration correction provenance: Topocentric apparent place omits one supplied physical correction · case 04

The adapter reports an incorrect topocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55540

Aberration correction provenance: Topocentric apparent place omits one supplied physical correction · case 05

The adapter reports an incorrect topocentric apparent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55541

Aberration correction provenance: Annual aberration idempotence reads the diurnal-correction provenance bit · case 01

The adapter reports an incorrect annual only once while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55542

Aberration correction provenance: Annual aberration idempotence reads the diurnal-correction provenance bit · case 02

The adapter reports an incorrect annual only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55543

Aberration correction provenance: Annual aberration idempotence reads the diurnal-correction provenance bit · case 03

The adapter reports an incorrect annual only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55544

Aberration correction provenance: Annual aberration idempotence reads the diurnal-correction provenance bit · case 04

The adapter reports an incorrect annual only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55545

Aberration correction provenance: Annual aberration idempotence reads the diurnal-correction provenance bit · case 05

The adapter reports an incorrect annual only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55546

Aberration correction provenance: Diurnal aberration is skipped merely because annual aberration was applied · case 01

The adapter reports an incorrect diurnal only once while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55547

Aberration correction provenance: Diurnal aberration is skipped merely because annual aberration was applied · case 02

The adapter reports an incorrect diurnal only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55548

Aberration correction provenance: Diurnal aberration is skipped merely because annual aberration was applied · case 03

The adapter reports an incorrect diurnal only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55549

Aberration correction provenance: Diurnal aberration is skipped merely because annual aberration was applied · case 04

The adapter reports an incorrect diurnal only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55550

Aberration correction provenance: Diurnal aberration is skipped merely because annual aberration was applied · case 05

The adapter reports an incorrect diurnal only once while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55551

Aberration correction provenance: Inverse geocentric apparent-place conversion removes a site correction never included · case 01

The adapter reports an incorrect catalog from geocentric while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55552

Aberration correction provenance: Inverse geocentric apparent-place conversion removes a site correction never included · case 02

The adapter reports an incorrect catalog from geocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55553

Aberration correction provenance: Inverse geocentric apparent-place conversion removes a site correction never included · case 03

The adapter reports an incorrect catalog from geocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55554

Aberration correction provenance: Inverse geocentric apparent-place conversion removes a site correction never included · case 04

The adapter reports an incorrect catalog from geocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55555

Aberration correction provenance: Inverse geocentric apparent-place conversion removes a site correction never included · case 05

The adapter reports an incorrect catalog from geocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55556

Aberration correction provenance: Topocentric-to-geocentric conversion also strips annual aberration · case 01

The adapter reports an incorrect geocentric from topocentric while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55557

Aberration correction provenance: Topocentric-to-geocentric conversion also strips annual aberration · case 02

The adapter reports an incorrect geocentric from topocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55558

Aberration correction provenance: Topocentric-to-geocentric conversion also strips annual aberration · case 03

The adapter reports an incorrect geocentric from topocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55559

Aberration correction provenance: Topocentric-to-geocentric conversion also strips annual aberration · case 04

The adapter reports an incorrect geocentric from topocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55560

Aberration correction provenance: Topocentric-to-geocentric conversion also strips annual aberration · case 05

The adapter reports an incorrect geocentric from topocentric while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55561

Spectral reciprocal density: Wavelength-to-frequency conversion applies the reciprocal in the wrong direction · case 01

The adapter reports an incorrect frequency while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55562

Spectral reciprocal density: Wavelength-to-frequency conversion applies the reciprocal in the wrong direction · case 02

The adapter reports an incorrect frequency while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55563

Spectral reciprocal density: Wavelength-to-frequency conversion applies the reciprocal in the wrong direction · case 03

The adapter reports an incorrect frequency while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55564

Spectral reciprocal density: Wavelength-to-frequency conversion applies the reciprocal in the wrong direction · case 04

The adapter reports an incorrect frequency while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55565

Spectral reciprocal density: Wavelength-to-frequency conversion applies the reciprocal in the wrong direction · case 05

The adapter reports an incorrect frequency while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55566

Spectral reciprocal density: Reciprocal spectral coordinates retain wavelength edge ordering · case 01

The adapter reports an incorrect frequency edges while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55567

Spectral reciprocal density: Reciprocal spectral coordinates retain wavelength edge ordering · case 02

The adapter reports an incorrect frequency edges while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55568

Spectral reciprocal density: Reciprocal spectral coordinates retain wavelength edge ordering · case 03

The adapter reports an incorrect frequency edges while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55569

Spectral reciprocal density: Reciprocal spectral coordinates retain wavelength edge ordering · case 04

The adapter reports an incorrect frequency edges while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55570

Spectral reciprocal density: Reciprocal spectral coordinates retain wavelength edge ordering · case 05

The adapter reports an incorrect frequency edges while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55571

Spectral reciprocal density: Wavelength density transforms with the inverse spectral Jacobian · case 01

The adapter reports an incorrect frequency density while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55572

Spectral reciprocal density: Wavelength density transforms with the inverse spectral Jacobian · case 02

The adapter reports an incorrect frequency density while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55573

Spectral reciprocal density: Wavelength density transforms with the inverse spectral Jacobian · case 03

The adapter reports an incorrect frequency density while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55574

Spectral reciprocal density: Wavelength density transforms with the inverse spectral Jacobian · case 04

The adapter reports an incorrect frequency density while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55575

Spectral reciprocal density: Wavelength density transforms with the inverse spectral Jacobian · case 05

The adapter reports an incorrect frequency density while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55576

Spectral reciprocal density: Finite reciprocal bandwidth is approximated by reciprocal wavelength width · case 01

The adapter reports an incorrect frequency bandwidth while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55577

Spectral reciprocal density: Finite reciprocal bandwidth is approximated by reciprocal wavelength width · case 02

The adapter reports an incorrect frequency bandwidth while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55578

Spectral reciprocal density: Finite reciprocal bandwidth is approximated by reciprocal wavelength width · case 03

The adapter reports an incorrect frequency bandwidth while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55579

Spectral reciprocal density: Finite reciprocal bandwidth is approximated by reciprocal wavelength width · case 04

The adapter reports an incorrect frequency bandwidth while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55580

Spectral reciprocal density: Finite reciprocal bandwidth is approximated by reciprocal wavelength width · case 05

The adapter reports an incorrect frequency bandwidth while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55581

Spectral reciprocal density: Local frequency increment loses its decreasing-wavelength orientation · case 01

The adapter reports an incorrect local frequency step while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55582

Spectral reciprocal density: Local frequency increment loses its decreasing-wavelength orientation · case 02

The adapter reports an incorrect local frequency step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55583

Spectral reciprocal density: Local frequency increment loses its decreasing-wavelength orientation · case 03

The adapter reports an incorrect local frequency step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55584

Spectral reciprocal density: Local frequency increment loses its decreasing-wavelength orientation · case 04

The adapter reports an incorrect local frequency step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55585

Spectral reciprocal density: Local frequency increment loses its decreasing-wavelength orientation · case 05

The adapter reports an incorrect local frequency step while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55586

Spectral reciprocal density: Spectral bin integration mixes a frequency density with a wavelength width · case 01

The adapter reports an incorrect bin energy proxy while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55587

Spectral reciprocal density: Spectral bin integration mixes a frequency density with a wavelength width · case 02

The adapter reports an incorrect bin energy proxy while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55588

Spectral reciprocal density: Spectral bin integration mixes a frequency density with a wavelength width · case 03

The adapter reports an incorrect bin energy proxy while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55589

Spectral reciprocal density: Spectral bin integration mixes a frequency density with a wavelength width · case 04

The adapter reports an incorrect bin energy proxy while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55590

Spectral reciprocal density: Spectral bin integration mixes a frequency density with a wavelength width · case 05

The adapter reports an incorrect bin energy proxy while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55591

Logarithmic spectral index: Logarithmic wavelength axes are evaluated with linear dispersion semantics · case 01

The adapter reports an incorrect wavelength while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55592

Logarithmic spectral index: Logarithmic wavelength axes are evaluated with linear dispersion semantics · case 02

The adapter reports an incorrect wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55593

Logarithmic spectral index: Logarithmic wavelength axes are evaluated with linear dispersion semantics · case 03

The adapter reports an incorrect wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55594

Logarithmic spectral index: Logarithmic wavelength axes are evaluated with linear dispersion semantics · case 04

The adapter reports an incorrect wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55595

Logarithmic spectral index: Logarithmic wavelength axes are evaluated with linear dispersion semantics · case 05

The adapter reports an incorrect wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55596

Logarithmic spectral index: Next logarithmic spectral channel adds instead of multiplying · case 01

The adapter reports an incorrect next wavelength while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55597

Logarithmic spectral index: Next logarithmic spectral channel adds instead of multiplying · case 02

The adapter reports an incorrect next wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55598

Logarithmic spectral index: Next logarithmic spectral channel adds instead of multiplying · case 03

The adapter reports an incorrect next wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55599

Logarithmic spectral index: Next logarithmic spectral channel adds instead of multiplying · case 04

The adapter reports an incorrect next wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55600

Logarithmic spectral index: Next logarithmic spectral channel adds instead of multiplying · case 05

The adapter reports an incorrect next wavelength while other fields remain valid.

Astronomical coordinate conventions◈ Members↗

INSPECTABLE BY DESIGN

Every result has a runnable source.

Runnable implementations with recorded outputs, source hashes, and explicit contracts. Related variants share a failure mechanism and belong together in evaluation splits.

Read the methodology ↗