Sample
winnow 1.0.4: Show that `default_value` does not convert a parser failure into the type default.
Verified sample for cargo winnow 1.0.4: Show that `default_value` does not convert a parser failure into the type default. The contract ran on rust 1 · linux…
sha256:4219060d8b7de0185f0c2c229efd5d291c7174539c0221d94245dab6945914d0
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 |
2026-08-16 |
| 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
- Show that `default_value` does not convert a parser failure into the type default.
- Packages
- Symbols
-
- winnow::Parser::default_value
- winnow::ascii::alpha1
- winnow::error::ErrMode
- Environment
- rust
- Created
- 2026-08-16T15:21:23Z
Contract
- assert `alpha1.default_value()` on '123' returns `Err(ErrMode::Backtrack(_))` instead of falling back to `0`
- assert `alpha1.default_value()` on 'abc' returns `Ok(("", 0))`
Files
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs