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-55601

Logarithmic spectral index: Redshift on a log-wavelength grid is applied as pixel scaling · case 01

The adapter reports an incorrect redshifted pixel while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55602

Logarithmic spectral index: Redshift on a log-wavelength grid is applied as pixel scaling · case 02

The adapter reports an incorrect redshifted pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55603

Logarithmic spectral index: Redshift on a log-wavelength grid is applied as pixel scaling · case 03

The adapter reports an incorrect redshifted pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55604

Logarithmic spectral index: Redshift on a log-wavelength grid is applied as pixel scaling · case 04

The adapter reports an incorrect redshifted pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55605

Logarithmic spectral index: Redshift on a log-wavelength grid is applied as pixel scaling · case 05

The adapter reports an incorrect redshifted pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55606

Logarithmic spectral index: Rest-frame logarithmic pixel mapping uses the observed-frame shift direction · case 01

The adapter reports an incorrect rest pixel while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55607

Logarithmic spectral index: Rest-frame logarithmic pixel mapping uses the observed-frame shift direction · case 02

The adapter reports an incorrect rest pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55608

Logarithmic spectral index: Rest-frame logarithmic pixel mapping uses the observed-frame shift direction · case 03

The adapter reports an incorrect rest pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55609

Logarithmic spectral index: Rest-frame logarithmic pixel mapping uses the observed-frame shift direction · case 04

The adapter reports an incorrect rest pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55610

Logarithmic spectral index: Rest-frame logarithmic pixel mapping uses the observed-frame shift direction · case 05

The adapter reports an incorrect rest pixel while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55611

Logarithmic spectral index: Spectral log-grid decimation preserves the old adjacent-channel ratio · case 01

The adapter reports an incorrect coarse ratio while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55612

Logarithmic spectral index: Spectral log-grid decimation preserves the old adjacent-channel ratio · case 02

The adapter reports an incorrect coarse ratio while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55613

Logarithmic spectral index: Spectral log-grid decimation preserves the old adjacent-channel ratio · case 03

The adapter reports an incorrect coarse ratio while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55614

Logarithmic spectral index: Spectral log-grid decimation preserves the old adjacent-channel ratio · case 04

The adapter reports an incorrect coarse ratio while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55615

Logarithmic spectral index: Spectral log-grid decimation preserves the old adjacent-channel ratio · case 05

The adapter reports an incorrect coarse ratio while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55616

Logarithmic spectral index: Log-grid channel widths are treated as globally constant · case 01

The adapter reports an incorrect channel width while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55617

Logarithmic spectral index: Log-grid channel widths are treated as globally constant · case 02

The adapter reports an incorrect channel width while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55618

Logarithmic spectral index: Log-grid channel widths are treated as globally constant · case 03

The adapter reports an incorrect channel width while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55619

Logarithmic spectral index: Log-grid channel widths are treated as globally constant · case 04

The adapter reports an incorrect channel width while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55620

Logarithmic spectral index: Log-grid channel widths are treated as globally constant · case 05

The adapter reports an incorrect channel width while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55621

Air vacuum line coordinate: Vacuum wavelength conversion divides by the supplied refractive index · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55622

Air vacuum line coordinate: Vacuum wavelength conversion divides by the supplied refractive index · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55623

Air vacuum line coordinate: Vacuum wavelength conversion divides by the supplied refractive index · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55624

Air vacuum line coordinate: Vacuum wavelength conversion divides by the supplied refractive index · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55625

Air vacuum line coordinate: Vacuum wavelength conversion divides by the supplied refractive index · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55626

Air vacuum line coordinate: Inverse air-wavelength conversion repeats the vacuum mapping · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55627

Air vacuum line coordinate: Inverse air-wavelength conversion repeats the vacuum mapping · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55628

Air vacuum line coordinate: Inverse air-wavelength conversion repeats the vacuum mapping · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55629

Air vacuum line coordinate: Inverse air-wavelength conversion repeats the vacuum mapping · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55630

Air vacuum line coordinate: Inverse air-wavelength conversion repeats the vacuum mapping · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55631

Air vacuum line coordinate: Air spectral bin widths do not receive the wavelength coordinate Jacobian · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55632

Air vacuum line coordinate: Air spectral bin widths do not receive the wavelength coordinate Jacobian · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55633

Air vacuum line coordinate: Air spectral bin widths do not receive the wavelength coordinate Jacobian · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55634

Air vacuum line coordinate: Air spectral bin widths do not receive the wavelength coordinate Jacobian · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55635

Air vacuum line coordinate: Air spectral bin widths do not receive the wavelength coordinate Jacobian · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55636

Air vacuum line coordinate: Air-to-vacuum density conversion violates bin-integral preservation · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55637

Air vacuum line coordinate: Air-to-vacuum density conversion violates bin-integral preservation · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55638

Air vacuum line coordinate: Air-to-vacuum density conversion violates bin-integral preservation · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55639

Air vacuum line coordinate: Air-to-vacuum density conversion violates bin-integral preservation · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55640

Air vacuum line coordinate: Air-to-vacuum density conversion violates bin-integral preservation · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55641

Air vacuum line coordinate: Frequency is computed from air wavelength without refractive-index conversion · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55642

Air vacuum line coordinate: Frequency is computed from air wavelength without refractive-index conversion · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55643

Air vacuum line coordinate: Frequency is computed from air wavelength without refractive-index conversion · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55644

Air vacuum line coordinate: Frequency is computed from air wavelength without refractive-index conversion · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55645

Air vacuum line coordinate: Frequency is computed from air wavelength without refractive-index conversion · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55646

Air vacuum line coordinate: Air-vacuum displacement is confused with the complete vacuum wavelength · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55647

Air vacuum line coordinate: Air-vacuum displacement is confused with the complete vacuum wavelength · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55648

Air vacuum line coordinate: Air-vacuum displacement is confused with the complete vacuum wavelength · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55649

Air vacuum line coordinate: Air-vacuum displacement is confused with the complete vacuum wavelength · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55650

Air vacuum line coordinate: Air-vacuum displacement is confused with the complete vacuum wavelength · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55651

Spectral channel edges: Channel coordinate indexing confuses zero-based spectral channel and width · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55652

Spectral channel edges: Channel coordinate indexing confuses zero-based spectral channel and width · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55653

Spectral channel edges: Channel coordinate indexing confuses zero-based spectral channel and width · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55654

Spectral channel edges: Channel coordinate indexing confuses zero-based spectral channel and width · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55655

Spectral channel edges: Channel coordinate indexing confuses zero-based spectral channel and width · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55656

Spectral channel edges: Spectral channel support substitutes spacing for full instrumental width · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55657

Spectral channel edges: Spectral channel support substitutes spacing for full instrumental width · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55658

Spectral channel edges: Spectral channel support substitutes spacing for full instrumental width · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55659

Spectral channel edges: Spectral channel support substitutes spacing for full instrumental width · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55660

Spectral channel edges: Spectral channel support substitutes spacing for full instrumental width · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55661

Spectral channel edges: Channel averaging locates the output at the first input rather than its center · case 01

The adapter reports an incorrect averaged center while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55662

Spectral channel edges: Channel averaging locates the output at the first input rather than its center · case 02

The adapter reports an incorrect averaged center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55663

Spectral channel edges: Channel averaging locates the output at the first input rather than its center · case 03

The adapter reports an incorrect averaged center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55664

Spectral channel edges: Channel averaging locates the output at the first input rather than its center · case 04

The adapter reports an incorrect averaged center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55665

Spectral channel edges: Channel averaging locates the output at the first input rather than its center · case 05

The adapter reports an incorrect averaged center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55666

Spectral channel edges: Averaged spectral channel step loses the original orientation · case 01

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

Astronomical coordinate conventions● Open access↗
FA-55667

Spectral channel edges: Averaged spectral channel step loses the original orientation · case 02

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

Astronomical coordinate conventions◈ Members↗
FA-55668

Spectral channel edges: Averaged spectral channel step loses the original orientation · case 03

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

Astronomical coordinate conventions◈ Members↗
FA-55669

Spectral channel edges: Averaged spectral channel step loses the original orientation · case 04

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

Astronomical coordinate conventions◈ Members↗
FA-55670

Spectral channel edges: Averaged spectral channel step loses the original orientation · case 05

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

Astronomical coordinate conventions◈ Members↗
FA-55671

Spectral channel edges: Spectral-window midpoint includes a nonexistent terminal channel · case 01

The adapter reports an incorrect window center while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55672

Spectral channel edges: Spectral-window midpoint includes a nonexistent terminal channel · case 02

The adapter reports an incorrect window center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55673

Spectral channel edges: Spectral-window midpoint includes a nonexistent terminal channel · case 03

The adapter reports an incorrect window center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55674

Spectral channel edges: Spectral-window midpoint includes a nonexistent terminal channel · case 04

The adapter reports an incorrect window center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55675

Spectral channel edges: Spectral-window midpoint includes a nonexistent terminal channel · case 05

The adapter reports an incorrect window center while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55676

Spectral channel edges: Spectral window extent excludes the outer half-channel supports · case 01

The adapter reports an incorrect window extent while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55677

Spectral channel edges: Spectral window extent excludes the outer half-channel supports · case 02

The adapter reports an incorrect window extent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55678

Spectral channel edges: Spectral window extent excludes the outer half-channel supports · case 03

The adapter reports an incorrect window extent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55679

Spectral channel edges: Spectral window extent excludes the outer half-channel supports · case 04

The adapter reports an incorrect window extent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55680

Spectral channel edges: Spectral window extent excludes the outer half-channel supports · case 05

The adapter reports an incorrect window extent while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55681

Exposure time coordinate: Exposure reference fraction is ignored in favor of midpoint convention · case 01

The adapter reports an incorrect reference time while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55682

Exposure time coordinate: Exposure reference fraction is ignored in favor of midpoint convention · case 02

The adapter reports an incorrect reference time while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55683

Exposure time coordinate: Exposure reference fraction is ignored in favor of midpoint convention · case 03

The adapter reports an incorrect reference time while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55684

Exposure time coordinate: Exposure reference fraction is ignored in favor of midpoint convention · case 04

The adapter reports an incorrect reference time while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55685

Exposure time coordinate: Exposure reference fraction is ignored in favor of midpoint convention · case 05

The adapter reports an incorrect reference time while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55686

Exposure time coordinate: Rolling-shutter timestamps use a one-based row origin · case 01

The adapter reports an incorrect row start while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55687

Exposure time coordinate: Rolling-shutter timestamps use a one-based row origin · case 02

The adapter reports an incorrect row start while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55688

Exposure time coordinate: Rolling-shutter timestamps use a one-based row origin · case 03

The adapter reports an incorrect row start while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55689

Exposure time coordinate: Rolling-shutter timestamps use a one-based row origin · case 04

The adapter reports an incorrect row start while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55690

Exposure time coordinate: Rolling-shutter timestamps use a one-based row origin · case 05

The adapter reports an incorrect row start while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55691

Exposure time coordinate: Row observation epoch uses frame midpoint or row exposure end · case 01

The adapter reports an incorrect row midpoint while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55692

Exposure time coordinate: Row observation epoch uses frame midpoint or row exposure end · case 02

The adapter reports an incorrect row midpoint while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55693

Exposure time coordinate: Row observation epoch uses frame midpoint or row exposure end · case 03

The adapter reports an incorrect row midpoint while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55694

Exposure time coordinate: Row observation epoch uses frame midpoint or row exposure end · case 04

The adapter reports an incorrect row midpoint while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55695

Exposure time coordinate: Row observation epoch uses frame midpoint or row exposure end · case 05

The adapter reports an incorrect row midpoint while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55696

Exposure time coordinate: Shutter travel correction is treated as a global exposure offset · case 01

The adapter reports an incorrect shutter corrected while other fields remain valid.

Astronomical coordinate conventions● Open access↗
FA-55697

Exposure time coordinate: Shutter travel correction is treated as a global exposure offset · case 02

The adapter reports an incorrect shutter corrected while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55698

Exposure time coordinate: Shutter travel correction is treated as a global exposure offset · case 03

The adapter reports an incorrect shutter corrected while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55699

Exposure time coordinate: Shutter travel correction is treated as a global exposure offset · case 04

The adapter reports an incorrect shutter corrected while other fields remain valid.

Astronomical coordinate conventions◈ Members↗
FA-55700

Exposure time coordinate: Shutter travel correction is treated as a global exposure offset · case 05

The adapter reports an incorrect shutter corrected 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 ↗