Sample
regex 1.13.1: Extract named capture groups with the regex crate, which has no backtracking
Verified sample for cargo regex 1.13.1: Extract named capture groups with the regex crate, which has no backtracking. The contract ran on rust 1 · linux…
sha256:ec8b1f9f99e017e0f94308dd51bc6aa26dd89955a9aaf0b41eb0f11c6a136116
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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 1 linux x64 rust 1 rust cargo
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-13 |
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-17 |
Case
HOW- Goal
- Extract named capture groups with the regex crate, which has no backtracking
- Packages
- Symbols
-
- Regex::new
- captures
- name
- Environment
- rust 1
- Created
- 2026-08-13T18:44:58Z
Contract
- compile a pattern with named groups and extract them
- assert a greedy name group splits on the LAST @, so scoped names parse
- assert a non-matching input yields None rather than an error
- assert backreferences and lookaround are rejected at compile time
Files
- Cargo.lock
- Cargo.toml
- csx.json
- src/main.rs