Sample
serde 1.0.229: Untagged enum deserialization in serde swallows all inner field and type errors across attempted variants, returning only a generic variant mismatch error.
Verified sample for cargo serde 1.0.229: Untagged enum deserialization in serde swallows all inner field and type errors across attempted variants, returning…
sha256:cb27e7063ed8a2f410b07c5317677ee8a2f3d5b351bafda6c3862fab5a213a3e
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
rust linux x64 rust rust cargo
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:ac1544ece1e22594 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-14 |
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
Case
HOW- Goal
- Untagged enum deserialization in serde swallows all inner field and type errors across attempted variants, returning only a generic variant mismatch error.
- Packages
- Symbols
-
- serde::Deserialize
- serde_json::from_str
- Environment
- rust
- Created
- 2026-08-14T22:41:30Z
Contract
- assert untagged enum deserialization error on type mismatch contains generic mismatch message without underlying field name or invalid type error
- assert untagged enum deserialization error on missing field does not contain missing field name or variant name
- assert tagged enum deserialization preserves exact inner field and type error details
Files
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs