[test] workflow-server PR #897 by vercel-gh-bot-2[bot] · Pull Request #3985 · vercel/workflow

vercel-gh-bot-2 · 2026-09-04T19:45:57Z

This PR was automatically created to test a workflow-server preview deployment.

This PR will be automatically closed after 24 hours.

changeset-bot · 2026-09-04T19:46:01Z

⚠️ No Changeset found

Latest commit: ba692c0

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vercel · 2026-09-04T19:46:10Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
example-nextjs-workflow-turbopack	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
example-nextjs-workflow-webpack	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
example-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-astro-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-express-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-fastify-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-hono-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-nestjs-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-nitro-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-nuxt-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-python-workflow	Ready	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-sveltekit-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-tanstack-start-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workbench-vite-workflow	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workflow-docs	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workflow-swc-playground	Ready	Preview, v0	Sep 4, 2026 8:10pm UTC
workflow-tarballs	Building	Preview, v0	Sep 4, 2026 8:10pm UTC
workflow-web	Ready	Preview, v0	Sep 4, 2026 8:10pm UTC

github-actions · 2026-09-04T19:46:14Z

🧪 E2E Test Results

❌ Some tests failed

❌ Failed E2E Tests

▲ Vercel Production (5 failed)

python-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X | 🔍 observability
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78 | 🔍 observability
writableForwardedFromWorkflowWorkflow | wrun_41M1Q0YJF50GHZGYMJD6509EAT | 🔍 observability
writableForwardedFromStepWorkflow | wrun_41M1Q0YNMQ0GTAQAKP7C9W144Y | 🔍 observability

vercel-http-transport (32 failed)

example (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

express (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

hono (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

nextjs-turbopack (7 failed):

webhookWorkflow | wrun_41M1Q0XKEA0GM27WQMJBGWTSQF
parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_41M1Q0XNGD0GMDBYNVYJWY1Z52
outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

nitro (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

vite (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

vercel-ws-transport (22 failed)

example (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

express (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

nextjs-turbopack (7 failed):

webhookWorkflow | wrun_41M1Q0XKEA0GM27WQMJBGWTSQF
parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_41M1Q0XNGD0GMDBYNVYJWY1Z52
outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

vite (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M1Q110810GS1ZHESSNKZ9T7X
utf8StreamWorkflow | wrun_41M1Q124NP0GVXN4J18J1RJZ78
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - TTL expiration triggers signal | wrun_41M1Q17KH70GQXPZT8RWJXX5D6

⚠️ Flaky E2E Tests (passed on retry)

These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.

abortAnyInStepWorkflow: AbortSignal.any inside a step composes deserialized signals (example)
distributedAbortController - manual abort triggers signal (express)
writableForwardedFromWorkflowWorkflow (nextjs-turbopack)

E2E Test Summary

Summary

	Passed	Failed	Skipped	Total
❌ ▲ Vercel Production	61	5	94	160
❌ vercel-http-transport	785	32	143	960
❌ vercel-ws-transport	531	22	87	640
Total	1377	59	324	1760

Details by Category

❌ ▲ Vercel Production

App	Passed	Failed	Skipped
❌ python-node	61	5	94

❌ vercel-http-transport

App	Passed	Failed	Skipped
❌ example	127	5	28
❌ express	127	5	28
❌ hono	127	5	28
❌ nextjs-turbopack	150	7	3
❌ nitro	127	5	28
❌ vite	127	5	28

❌ vercel-ws-transport

App	Passed	Failed	Skipped
❌ example	127	5	28
❌ express	127	5	28
❌ nextjs-turbopack	150	7	3
❌ vite	127	5	28

📋 View full workflow run

github-actions · 2026-09-04T19:50:13Z

Sim World

Simulated world deterministic testing for races. Traces

🟠 world-sim scenario book — 1 fail of 41 total

fence=per-spec

scenario	outcome	events	virt	replay
✅ `smoke-no-steps`	completed	3	0ms	ok
✅ `smoke-one-step`	completed	6	0ms	ok
✅ `hook-at-step-started`	completed	12	0ms	ok
✅ `hook-at-step-completed`	completed	12	0ms	ok
✅ `hook-at-hook-created`	completed	12	0ms	ok
✅ `deadline-hook-wins`	completed	7	1.0h	ok
✅ `deadline-expires`	completed	7	1.0h	ok
✅ `long-sleep`	completed	11	30.0d	ok
✅ `hook-never-arrives`	stalled	3	0ms	skipped
✅ `step-retries-twice`	completed	10	2.0s	ok
✅ `parallel-steps`	completed	9	0ms	ok
✅ `hook-on-execution-state`	completed	12	0ms	ok
✅ `peek-hook-before-branch`	completed	12	0ms	ok
✅ `peek-hook-after-branch`	completed	12	0ms	ok
✅ `peek-hook-at-registration`	completed	12	0ms	ok
✅ `race-hook-before-probe`	completed	12	0ms	ok
✅ `race-hook-after-probe`	completed	12	0ms	ok
✅ `race-duplicate-delivery`	completed	13	0ms	ok
✅ `attr-hook-before-step`	completed	11	0ms	ok
✅ `attr-hook-after-step`	completed	11	0ms	ok
✅ `attr-from-step-body`	completed	13	0ms	ok
✅ `fork-hook-after-timeout`	completed	14	1.0m	ok
✅ `fork-hook-before-timeout`	completed	14	1.0m	ok
✅ `count-hook-after-timeout`	completed	17	1.0m	ok
✅ `count-hook-before-timeout`	completed	20	1.0m	ok
✅ `stale-read-step-count-fork`	completed	20	1.0m	ok
✅ `stale-read-equal-step-counts`	completed	14	1.0m	ok
✅ `step-vs-step-fork`	completed	12	0ms	ok
✅ `step-vs-step-fork-fenced`	completed	12	0ms	ok
✅ `fence-catches-benign-direction`	completed	12	5ms	ok
✅ `in-flight-before-decision`	completed	17	1.0m	ok
❌ `in-flight-before-decision-counted`	completed	17	1.0m	ok
✅ `in-flight-after-decision`	completed	19	2.0m	ok
✅ `stale-read-step-count-fork-fenced`	completed	20	1.0m	ok
✅ `fork-hook-wins`	completed	13	1.0m	ok
✅ `fork-timeout-wins`	completed	13	1.0m	ok
✅ `unclaimed-payload-under-fork`	completed	17	1.0m	ok
✅ `claimed-payload-under-fork`	completed	17	1.0m	ok
✅ `writers-independent-step-bodies`	completed	12	0ms	ok
✅ `writers-scripted-tempo`	completed	12	0ms	ok
✅ `cancel-mid-step`	cancelled	7	0ms	skipped

Full trace: world-sim.txt

github-actions · 2026-09-04T19:50:51Z

Framework	Flow route	Step reg.	Framework output
hono	201.6 KiB (±0)	40.8 KiB (±0)	1.77 MiB (+38 B)
nextjs-turbopack	207.0 KiB (±0)	439 B (±0)	768.7 KiB (-16 B)

About these numbers

Sizes are gzip; parentheses show the change against main.
Flow route and Step reg. gate this job, on raw bytes rather than the gzip shown, at max(2%, 50.0 KiB). Framework output is informational.

ba692c0 · run

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test: Update WORKFLOW_SERVER_URL_OVERRIDE to https://workflow-server-…

ba692c0

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[test] workflow-server PR #897 - #3985

[test] workflow-server PR #897#3985
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🧪 E2E Test Results

❌ Failed E2E Tests

▲ Vercel Production (5 failed)

⚠️ Flaky E2E Tests (passed on retry)

E2E Test Summary

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