Recordsgolanggolang.org/x/syncv0.0.0-20190423024810-112230192c58
Which symbol ran where
Symbols × operating systems for this version. Cells drill into the package's compatibility cube.
Showing the environments with the most evidence.
Reading a cell: The number is how many recorded observations the rate divides — one build files an observation per stage it reached, so it counts neither builds nor machines nor people. The document beside it is a different fact from a different source: whether a sample exists at that coordinate, and how our own run of it went there.
- no sample at this coordinate yet
- there is a sample here, and nothing of ours has run it at this coordinate yet
- there is a sample here, and our run of it at this coordinate came back clean
- there is a sample here, and our run of it at this coordinate failed
- there is a sample here, and this coordinate records both a passing and a failing run of it
- nothing recorded — unknown, never "works" and never "broken"
- there is a level below this cell — click to open it
A document means there is a sample at that coordinate. Whether one EXISTS is a fact about this release and this API and does not change with OS, runtime or package manager; its COLOUR is how that sample ran in the environment you are looking at.
Environment detail
Project-level observations and symbol/contract verifications are counted separately and never combined.
These counts do not distinguish how the symbol was called: overloads, argument shapes and options are pooled together. What a particular call shape does is proven by a sample's contract, not by these numbers.
| Environment | Confidence | Observations | Verified | Pass rate | Peers | Last seen |
|---|---|---|---|---|---|---|
| go 1.26 · Go · go · linux glibc · docker
Observations: PROJECT_LOAD 2✓ · PROJECT_TEST 2✓ — Usage: USED 2✓ — Verified: CONTRACT 3✓
|
LOW | 4 +2 | 3 | 100% | 1 · 1✓ | 2026-10-19 |
| go 1.26 · Go · go · linux glibc
Observations: PROJECT_COMPILE 1✓ · PROJECT_PROCESS 14✓ — Usage: USED 15✓ — Verified: UNKNOWN 0✓ 3✕
|
LOW | 15 +15 | 3 | 83% | 1 | 2026-10-21 |
Recent failure clusters
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observed UNKNOWN exit 1 Evidence gap ×1 v0.0.0-20190423024810-112230192c58 os=linux · runtime=go@1.26 sha256:9eae388b4d88…expected panic for Nack · exit status 1go · unclassified-diagnostic · outer go run · gap stage-unknownEvidence quality: complete · Environment variants: 1 · First recorded: 2026-10-18 · Last seen: 2026-10-18Diagnostic re-verification candidate
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observed UNKNOWN exit 1 Evidence gap ×1 v0.0.0-20190423024810-112230192c58 os=linux · runtime=go@1.26 sha256:3a4ff727c30e…Contract test failed: test 6: expected error when calling AddWait after Add, got nil · exit status 1go · unclassified-diagnostic · outer go run · gap stage-unknownEvidence quality: complete · Environment variants: 1 · First recorded: 2026-10-20 · Last seen: 2026-10-20Diagnostic re-verification candidate
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observed UNKNOWN exit 1 Evidence gap ×1 v0.0.0-20190423024810-112230192c58 os=linux · runtime=go@1.26 sha256:17cff61c5997…expected panic in Message.Nack on direct message, but none occurred · exit status 1go · unclassified-diagnostic · outer go run · gap stage-unknownEvidence quality: complete · Environment variants: 1 · First recorded: 2026-10-21 · Last seen: 2026-10-21Diagnostic re-verification candidate
Symbols
- singleflight.Group 1 1 of 1 runs passed
- syncmap.Map 1 1 of 1 runs passed
- semaphore.NewWeighted 2 1 of 1 runs passed
- golang.org/x/sync/errgroup.WithContext 2 1 of 1 runs passed