示例
once_cell 1.21.4: Prove once_cell fallible initialization retry semantics, non-poisoning error recovery, unsync reentrancy panic behavior, and cell lifecycle reset
已验证示例 — cargo once_cell 1.21.4: Prove once_cell fallible initialization retry semantics, non-poisoning error recovery, unsync reentrancy panic behavior, and…
sha256:e0afb4151238134f23cb7f9babe65162ab344625d8c386e357c4dafa43f92775
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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 |
2026-08-17 |
| 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
- Prove once_cell fallible initialization retry semantics, non-poisoning error recovery, unsync reentrancy panic behavior, and cell lifecycle reset
- 符号
-
- once_cell::sync::OnceCell::get_or_try_init
- once_cell::sync::OnceCell
- once_cell::unsync::OnceCell
- once_cell::sync::OnceCell::take
- 环境
- rust
- 创建时间
- 2026-08-17T20:42:35Z
契约
- get_or_try_init leaves the OnceCell uninitialized upon receiving Err, enabling subsequent initialization attempts to retry and succeed without cell poisoning
- sync::OnceCell coordinates concurrent fallible initializers such that a failing thread unblocks waiting threads to retry and initialize the value
- unsync::OnceCell safely returns None for get() during initialization but panics with reentrant init when get_or_init or set is called reentrantly
- unsync::OnceCell cleanly resets its state upon panic unwind, allowing subsequent get_or_init invocations to initialize the cell
- OnceCell structural equality evaluates uninitialized cells as equal and take resets an initialized cell back to empty state for re-initialization
文件
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs