com.fasterxml.jackson.databind.ObjectMapper.readValue / com.fasterxml.jackson.core/jackson-annotations@2.21
OS × runtime at a glance
22026-08-19
- we ran a contract in this slice — the scarce case, so it is the one that carries a mark
- no mark: real machines recorded runs here and reported them; reported, not proven
- no recorded evidence
- n/m — passes over runs, on the basis the cell names
- ! measured anomaly: elevated failure rate or a failing verification
- ? weak or aged evidence: observed rather than verified, or older than 90 days (stale)
- ✓✓ cross-checked by at least two independent peers
Published samples
- verify AtomicLongDeserializer in pkg:maven/com.fasterxml.jackson.core/jackson-databind@2.21.4 Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. HOWAtomicLongDeserializercom.fasterxml.jackson.databind.ObjectMapper.readValuecom.fasterxml.jackson.databind.DeserializationFeature.ACCEPT_FLOAT_AS_INTcom.fasterxml.jackson.databind.cfg.MutableCoercionConfig.setCoercionjava 21 MIT-0 · 2026-08-18
Compatibility matrix
Project-level observations and symbol/contract verifications are counted separately and never combined.
These counts do not distinguish how the symbol was called: overloads, argument shapes and options are pooled together. What a particular call shape does is proven by a sample's contract, not by these numbers.
| Environment | Confidence | Observations | Verified | Pass rate | Peers | Last seen |
|---|---|---|---|---|---|---|
| java 21 · java 21 · maven · linux glibc · docker
Verified: CONTRACT 1✓
|
LOW | 0 | 1 | 100% | 0 · 1✓ | 2026-08-19 |
| java 25 · java 21 · maven · linux glibc · docker
Verified: CONTRACT 1✓
|
LOW | 0 | 1 | 100% | 0 · 1✓ | 2026-08-19 |
snapshot · 2026-08-20
Failure clusters
No failure clusters observed.