Sample
golang.org/x/sync 0.22.0: Run concurrent work with a bound and the first error with errgroup
Verified sample for golang golang.org/x/sync 0.22.0: Run concurrent work with a bound and the first error with errgroup. The contract ran on go 1.26 · linux…
sha256:fee4a8483e88e2109447b1f697e91dfbe81d19cfec3d5762d0d36b84547e9714
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
- 2
- Signing keys that built it
- 2
Declared environment
go 1.26 linux x64 go 1.26 go gomod
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · go@1 |
2026-08-13 |
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · go@1 |
2026-08-17 |
Case
HOW- Goal
- Run concurrent work with a bound and the first error with errgroup
- Packages
- Symbols
-
- errgroup.WithContext
- Group.SetLimit
- Group.Wait
- Environment
- go 1.26
- Created
- 2026-08-13T15:47:36Z
Contract
- run tasks through an errgroup with SetLimit
- assert concurrency never exceeded the limit
- assert Wait returns the first error
- assert the group context is canceled once a task fails
Files
- csx.json
- go.mod
- go.sum
- src/run.go
- test/main.go