Sample
colorchoice 1.0.5
Verified sample for cargo colorchoice 1.0.5. The contract ran on rust 1 · linux alpine/x64 · docker and passed: ColorChoice enum provides Auto, AlwaysAnsi…
sha256:5aedbf5d118a1821550ea0c6b65854f7a21fd77e7a8beefac8bd537e7a99d281
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
- 1
- Signing keys that built it
- 1
Declared environment
linux · alpine · musl x64 cargo
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1rust:1-alpine@sha256:a10e64dd139b… |
2026-10-12 |
Case
HOW- Goal
- verify pkg:cargo/colorchoice@1.0.5
- Packages
- Created
- 2026-10-11T20:38:51Z
Contract
- ColorChoice enum provides Auto, AlwaysAnsi, Always, and Never variants with Auto as default
- ColorChoice implements Copy, Clone, Debug, and Eq traits
- ColorChoice global reads the current global color choice setting
- ColorChoice write_global modifies the global color choice state across calls
Files
- Cargo.lock
- Cargo.toml
- PROMPT.md
- csx.json
- spec.json
- src/lib.rs
- test/contract.rs
Source
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4
[[package]]
name = "colorchoice"
version = "1.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
[[package]]
name = "sample-colorchoice"
version = "1.0.0"
dependencies = [
"colorchoice",
]
[package]
name = "sample-colorchoice"
version = "1.0.0"
edition = "2021"
publish = false
[dependencies]
colorchoice = "=1.0.5"
[[bin]]
name = "contract"
path = "test/contract.rs"
Clean-room public code sample — generation instructions
Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.
A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.
Goal: verify pkg:cargo/colorchoice@1.0.5
Kind: HOW
Use EXACTLY these public packages and versions:
- pkg:cargo/colorchoice@1.0.5
Rules:
- One focused purpose; the smallest project that proves the goal.
- Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
- Pin every dependency with a lockfile so resolution is reproducible.
- No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
- No personal names, emails, company names, or project identifiers of any kind.
- No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
- Keep it under 200 files and 256KB packed.
{"case":{"caseId":"case:sha256:abba7272ce5f517c64d12a1a977a9a3eba5737f491890901b1c58d0e11f051ad","contract":["ColorChoice enum provides Auto, AlwaysAnsi, Always, and Never variants with Auto as default","ColorChoice implements Copy, Clone, Debug, and Eq traits","ColorChoice global reads the current global color choice setting","ColorChoice write_global modifies the global color choice state across calls"],"goal":"verify pkg:cargo/colorchoice@1.0.5","kind":"HOW","packages":["pkg:cargo/colorchoice@1.0.5"],"schemaVersion":1},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/colorchoice@1.0.5"],"schemaVersion":1,"subject":"pkg:cargo/colorchoice@1.0.5","verifierAdapter":"cargo@1"}
{
"schemaVersion": 1,
"goal": "verify pkg:cargo/colorchoice@1.0.5",
"kind": "HOW",
"packages": [
"pkg:cargo/colorchoice@1.0.5"
]
}
//! Clean-room verification sample for colorchoice.
pub use colorchoice::*;
use colorchoice::ColorChoice;
fn main() {
// 1. ColorChoice enum provides Auto, AlwaysAnsi, Always, and Never variants with Auto as default
assert_eq!(ColorChoice::default(), ColorChoice::Auto);
let auto = ColorChoice::Auto;
let always_ansi = ColorChoice::AlwaysAnsi;
let always = ColorChoice::Always;
let never = ColorChoice::Never;
// 2. ColorChoice implements Copy, Clone, Debug, and Eq traits
assert_eq!(auto, ColorChoice::Auto);
assert_ne!(auto, always);
assert_ne!(always_ansi, always);
assert_ne!(always, never);
let copied: ColorChoice = auto;
let cloned: ColorChoice = copied.clone();
assert_eq!(cloned, auto);
assert_eq!(format!("{:?}", ColorChoice::Auto), "Auto");
assert_eq!(format!("{:?}", ColorChoice::AlwaysAnsi), "AlwaysAnsi");
assert_eq!(format!("{:?}", ColorChoice::Always), "Always");
assert_eq!(format!("{:?}", ColorChoice::Never), "Never");
// 3. ColorChoice global reads the current global color choice setting
let initial = ColorChoice::global();
assert_eq!(initial, ColorChoice::Auto);
// 4. ColorChoice write_global modifies the global color choice state across calls
ColorChoice::Always.write_global();
assert_eq!(ColorChoice::global(), ColorChoice::Always);
ColorChoice::Never.write_global();
assert_eq!(ColorChoice::global(), ColorChoice::Never);
ColorChoice::AlwaysAnsi.write_global();
assert_eq!(ColorChoice::global(), ColorChoice::AlwaysAnsi);
ColorChoice::Auto.write_global();
assert_eq!(ColorChoice::global(), ColorChoice::Auto);
println!("All colorchoice contract assertions passed successfully.");
}
Origin Seeder
anonymous