Sample
Enforce Tower Service backpressure by pairing every call with a prior poll_ready, isolating Buffer permits from clones, and maintaining top-to-bottom ServiceBuilder layer ordering
sha256:37636c110523173cb669e2b2a52feda3274b7cc8998bcb54c04b6b7a5c230bae
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Enforce Tower Service backpressure by pairing every call with a prior poll_ready, isolating Buffer permits from clones, and maintaining top-to-bottom ServiceBuilder layer ordering HOW
- Packages
- tower 0.5.3
- Environment
- rust
- Created
- 2026-08-16T08:25:13Z
Contract
- ServiceExt::ready(&mut svc) acquires a single-use readiness permit consumed by the next call()
- Invoking call() on a Buffer or ConcurrencyLimit without poll_ready or after permit exhaustion panics at runtime
- Cloning a readied Buffer does not transfer the permit to the clone; calling call() on the clone panics
- Concurrent task dispatch requires cloning before ready/oneshot rather than cloning an already-readied instance
- ServiceBuilder layer order executes from top to bottom (outermost first) on requests
Files
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs
- tests/contract.rs
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- rust 1 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · cargo@1 · 2026-08-16 · ed25519:d91480838ac982c9