샘플
anyhow 1.0.104: Handle errors in a Rust application with anyhow: attach context, keep the cause chain, log it without losing the cause, and recover the concrete error
검증된 샘플 — cargo anyhow 1.0.104: Handle errors in a Rust application with anyhow: attach context, keep the cause chain, log it without losing the cause, and…
sha256:709971847660bb4f230ee832aa66da4263481bd8d5e0a498178ee3b789c53404
이 네트워크가 제공하는 것은 하나입니다. 빌드되는 샘플. 샌드박스에서 돌리고 서명된 영수증을 보관합니다. 등급을 매기지 않고 무엇도 보증하지 않습니다 — 같은 코드가 당신 환경에서 빌드되는지는 측정한 적이 없습니다.
통과한 계약 영수증을 낸 서로 다른 서명 키의 수입니다. 하나면 작성자 혼자이고, 둘 이상이면 다른 사람도 빌드했다는 뜻입니다. 키는 스스로 만드는 것이고 뒤에 등록된 신원이 없으므로, 세는 것은 사람이 아니라 키입니다.
MIT-0
실행 증거
선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.
- 증거 기준
- 서명된 컨트랙트 통과
- 검증 영수증
- 2
- 빌드한 서명 키
- 2
선언된 환경
rust 1 linux x64 rust 1 rust cargo
검증 실행 환경
| 환경 | 컨트랙트 | 단계 | 실행일 |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-14 |
| rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
케이스
HOW- 목표
- Handle errors in a Rust application with anyhow: attach context, keep the cause chain, log it without losing the cause, and recover the concrete error
- 심벌
-
- anyhow::Context::context
- anyhow::Context::with_context
- anyhow::Error::chain
- anyhow::Error::root_cause
- anyhow::Error::downcast_ref
- anyhow::bail
- anyhow::ensure
- 환경
- rust 1
- 생성일
- 2026-08-14T08:53:52Z
컨트랙트
- assert the bare io::Error for a missing path is NotFound and its Display carries os error 2
- assert Display of a context-wrapped error prints only the outermost context, not the io message
- assert alternate Display {:#} flattens the whole chain into one colon-joined line while {} does not
- assert chain() yields both context frames then the original io error, in that order
- assert root_cause() returns the original io error at the bottom of the chain
- assert Debug {:?} prints the multi-line report with a Caused by section
- assert anyhow::Error derefs to a dyn StdError that prints as the outermost frame, and that source() through that Deref yields the next frame
- assert downcast_ref recovers the io::Error and its NotFound kind through two layers of context
- assert downcast_ref recovers a concrete thiserror library type out of a context-wrapped anyhow error
- assert anyhow::Error is one pointer wide, smaller than the concrete thiserror error, which is as wide as its String field
- assert bail! and ensure! build a one-frame error from a plain message with no source
- assert an interpolated bail! message downcasts to String while an anyhow! bare literal downcasts to &str
- assert io::Error and ParseIntError both convert through ? with no From impl written
- assert context() on a None Option produces an error with no source
- assert with_context never runs its closure on the success path while context() builds its message even when the Result is Ok
파일
- Cargo.lock
- Cargo.toml
- csx.json
- src/main.rs