示例
chrono 0.4.45: Disabling chrono default features strips Utc::now and Local which require the clock feature rather than std, while serde support requires an explicit opt-in serde feature and serializes DateTime as an RFC 3339 string
已验证示例 — cargo chrono 0.4.45: Disabling chrono default features strips Utc::now and Local which require the clock feature rather than std, while serde support…
sha256:861889cfdd0a5dd5ceeb51b6ec6359baf342d7c5c30f7d1fbc598a53e175fac2
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
rust linux x64 rust rust cargo
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| 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 |
案例
HOW- 目标
- Disabling chrono default features strips Utc::now and Local which require the clock feature rather than std, while serde support requires an explicit opt-in serde feature and serializes DateTime as an RFC 3339 string
- 符号
-
- chrono::DateTime
- chrono::Utc
- chrono::NaiveDate
- chrono::NaiveTime
- chrono::NaiveDateTime
- chrono::Duration
- 环境
- rust
- 创建时间
- 2026-08-15T15:21:11Z
契约
- assert chrono with default-features=false and alloc/serde features serializes DateTime<Utc> to RFC 3339 string format without clock or std
- assert deserialization strictly validates calendar dates and rejects invalid leap year dates
- assert arithmetic and date math on DateTime<Utc> execute deterministically without system clock access
文件
- .gitignore
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs