[test] workflow-server PR #857

[vercel-gh-bot-3]

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

---

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[changeset-bot]

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[vercel]

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, v0	Aug 25, 2026 8:20pm
example-nextjs-workflow-webpack	Ready	Preview, v0	Aug 25, 2026 8:20pm
example-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-astro-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-express-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-fastify-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-hono-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-nestjs-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-nitro-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-nuxt-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-python-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-sveltekit-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-tanstack-start-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workbench-vite-workflow	Ready	Preview, v0	Aug 25, 2026 8:20pm
workflow-docs	Ready	Preview, v0	Aug 25, 2026 8:20pm
workflow-swc-playground	Ready	Preview, v0	Aug 25, 2026 8:20pm
workflow-tarballs	Ready	Preview, v0	Aug 25, 2026 8:20pm
workflow-web	Ready	Preview, v0	Aug 25, 2026 8:20pm

[github-actions]

🧪 E2E Test Results

❌ Some tests failed

❌ Failed E2E Tests

▲ Vercel Production (8 failed)

python-node (8 failed):

• promiseAllWorkflow | wrun_41M0X997TW0GSRJREK3BF2CXSA | 🔍 observability
• sleepingWorkflow | wrun_41M0X99WJ60GGQ1ERJ0CD5J6P3 | 🔍 observability
• parallelSleepWorkflow | wrun_41M0X99WT60GTST4M5RF1SN371 | 🔍 observability
• nullByteWorkflow | wrun_41M0X9A3330GXAW00D2R4RD5C2 | 🔍 observability
• cancelRun - cancelling a running workflow | wrun_41M0X9EKK30GWY7FYC33KYX5S7 | 🔍 observability
• cancelRun via CLI - cancelling a running workflow | wrun_41M0X9EMKM0GN7DH3BGKNJ64DW | 🔍 observability
• sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_41M0X9EXG40GKTF42SGXEFCWNH | 🔍 observability
• resilient start: addTenWorkflow completes when run_created returns 500 | wrun_41M0X9FD7H0GTKYH0C5GN0X3CM | 🔍 observability

vercel-multi-region (1 failed)

nextjs-turbopack (1 failed):

• multi-region (world-vercel) implicit region: region-pinned routes without a region option /api/e2e-region-implicit/hkg1 mints a run tagged with its VERCEL_REGION

⚠️ 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.

• /api/e2e-region-implicit/hnd1 mints a run tagged with its VERCEL_REGION (nextjs-turbopack)
• an sfo1 reader sees chunks of an IN-PROGRESS iad1 stream (nextjs-turbopack)

🛠 Infra Events (absorbed by the harness)

Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.

14 infra events

• cold-start-warmup · suite warmup (python) · at 20:20:17Z · abandoned wrun_41M0X95PPD0GKX5ZRXEHRKVRFZ · (+7 more)
• run-pickup-stall · sleepingWorkflow (python) · at 20:20:33Z · abandoned wrun_41M0X99B6T0GH3C42RWRKVV9NS
• run-pickup-stall · parallelSleepWorkflow (python) · at 20:20:33Z · abandoned wrun_41M0X99B6T0GH3C42RWRKVV9NT
• run-pickup-stall · nullByteWorkflow (python) · at 20:20:33Z · abandoned wrun_41M0X99B6Y0GQ2QM9JHPMNW6E3
• run-pickup-stall · cancelRun - cancelling a running workflow (python) · at 20:20:33Z · abandoned wrun_41M0X99BGQ0GRM9GW0PES0KS2P
• run-pickup-stall · promiseAllWorkflow (python) · at 20:20:34Z · abandoned wrun_41M0X99B6K0GYG5EV99202M53S
• run-pickup-stall · cancelRun - cancelling a running workflow (python) · at 20:21:06Z · abandoned wrun_41M0X9AB770GNTZAQG94C7Y7P1
• run-pickup-stall · nullByteWorkflow (python) · at 20:21:34Z · abandoned wrun_41M0X9B6J50GW6WRP3VRRGAW56
• run-pickup-stall · parallelSleepWorkflow (python) · at 20:21:34Z · abandoned wrun_41M0X9B6JM0GXV6K43SG2VS7WW
• run-pickup-stall · sleepingWorkflow (python) · at 20:21:34Z · abandoned wrun_41M0X9B6KD0GJ9WTDSG1Y3SM6T
• run-pickup-stall · promiseAllWorkflow (python) · at 20:21:34Z · abandoned wrun_41M0X9B6J80GSRB13EV1GP4BQ1
• run-pickup-stall · cancelRun via CLI - cancelling a running workflow (python) · at 20:22:24Z · abandoned wrun_41M0X9BB7A0GX4AHE5JE3ACYGA
• run-pickup-stall · cancelRun via CLI - cancelling a running workflow (python) · at 20:24:05Z · abandoned wrun_41M0X9DC6R0GRVCHKA8YG98A9S
• run-pickup-stall · sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration (python) · at 20:24:06Z · abandoned wrun_41M0X9DBFF0GN34YTYZWBAQB9X

E2E Test Summary

Summary

	Passed	Failed	Skipped	Total
❌ ▲ Vercel Production	3570	8	742	4320
✅ vercel-http-transport	817	0	143	960
❌ vercel-multi-region	26	1	0	27
✅ vercel-ws-transport	553	0	87	640
Total	4966	9	972	5947

Details by Category

❌ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro-node	132	0	28
✅ astro-quickjs	132	0	28
✅ example-node	132	0	28
✅ example-quickjs	132	0	28
✅ express-node	132	0	28
✅ express-quickjs	132	0	28
✅ fastify-node	132	0	28
✅ fastify-quickjs	132	0	28
✅ hono-node	132	0	28
✅ hono-quickjs	132	0	28
✅ nest-node	132	0	28
✅ nest-quickjs	132	0	28
✅ nextjs-turbopack-node	157	0	3
✅ nextjs-turbopack-quickjs	157	0	3
✅ nextjs-webpack-node	157	0	3
✅ nextjs-webpack-quickjs	157	0	3
✅ nitro-node	132	0	28
✅ nitro-quickjs	132	0	28
✅ nuxt-node	132	0	28
✅ nuxt-quickjs	132	0	28
❌ python-node	0	8	152
✅ sveltekit-node	151	0	9
✅ sveltekit-quickjs	151	0	9
✅ tanstack-start-node	132	0	28
✅ tanstack-start-quickjs	132	0	28
✅ vite-node	132	0	28
✅ vite-quickjs	132	0	28

✅ vercel-http-transport

App	Passed	Failed	Skipped
✅ example	132	0	28
✅ express	132	0	28
✅ hono	132	0	28
✅ nextjs-turbopack	157	0	3
✅ nitro	132	0	28
✅ vite	132	0	28

❌ vercel-multi-region

App	Passed	Failed	Skipped
❌ nextjs-turbopack	26	1	0

✅ vercel-ws-transport

App	Passed	Failed	Skipped
✅ example	132	0	28
✅ express	132	0	28
✅ nextjs-turbopack	157	0	3
✅ vite	132	0	28

---

📋 View full workflow run

[github-actions]

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

Full trace: world-sim.txt

[github-actions]

Framework	Flow route	Step reg.	Framework output
hono	200.9 KiB (±0)	40.5 KiB (±0)	1.76 MiB (+38 B)
nextjs-turbopack	206.3 KiB (±0)	439 B (±0)	762.8 KiB (-17 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.

5f11aa0 · run