Sample
serde 1.0.229: Dependency crates declaring serde without the derive feature compile and serialize via derive macros when unified with a dependency graph that activates serde/derive, masking missing feature flags until built in isolation
Verified sample for cargo serde 1.0.229: Dependency crates declaring serde without the derive feature compile and serialize via derive macros when unified…
sha256:e583be8e3c3e9cb793e93e1be28e4fe841fe73406f39ed227bf494cc911856f0
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:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-15 |
| rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
Case
HOW- Goal
- Dependency crates declaring serde without the derive feature compile and serialize via derive macros when unified with a dependency graph that activates serde/derive, masking missing feature flags until built in isolation
- Packages
- Symbols
-
- serde::Serialize
- serde::Deserialize
- serde::Serializer
- serde::Deserializer
- serde::de::Visitor
- serde::de::SeqAccess
- serde::ser::SerializeSeq
- Environment
- rust
- Created
- 2026-08-16T06:28:08Z
Contract
- assert subcrate declaring serde with default-features=false successfully derives Serialize and Deserialize when unified with root crate enabling derive
- assert nested derived serialization and deserialization roundtrip data structures identically across unified crate boundaries
- assert manual Serialize and Deserialize implementations using Serializer and Deserializer traits function independently of derive macros
- assert deserializer rejects invalid types and missing required fields in derived structs
Files
- .gitignore
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs
- unaware-lib/Cargo.toml
- unaware-lib/src/lib.rs