[test] workflow-server PR #897 by vercel-gh-bot-3[bot] · Pull Request #3866 · vercel/workflow

vercel-gh-bot-3 · 2026-08-27T21:17:24Z

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

This PR will be automatically closed after 24 hours.

changeset-bot · 2026-08-27T21:17:28Z

⚠️ No Changeset found

Latest commit: 944aefe

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vercel · 2026-08-27T21:17:39Z

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 28, 2026 5:34pm
example-nextjs-workflow-webpack	Ready	Preview, v0	Aug 28, 2026 5:34pm
example-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-astro-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-express-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-fastify-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-hono-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-nestjs-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-nitro-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-nuxt-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-python-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-sveltekit-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-tanstack-start-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workbench-vite-workflow	Ready	Preview, v0	Aug 28, 2026 5:34pm
workflow-docs	Ready	Preview, v0	Aug 28, 2026 5:34pm
workflow-swc-playground	Ready	Preview, v0	Aug 28, 2026 5:34pm
workflow-tarballs	Ready	Preview, v0	Aug 28, 2026 5:34pm
workflow-web	Ready	Preview, v0	Aug 28, 2026 5:34pm

github-actions · 2026-08-27T21:20:02Z

🧪 E2E Test Results

❌ Some tests failed

❌ Failed E2E Tests

▲ Vercel Production (147 failed)

astro-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

astro-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

example-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

example-quickjs (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

express-node (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

express-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

fastify-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

fastify-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

hono-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

hono-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nest-node (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nest-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nextjs-turbopack-node (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nextjs-turbopack-quickjs (7 failed):

webhookWorkflow | wrun_41M14Q1M560GVQDF76T4CFV92P | 🔍 observability
parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_41M14PX3QA0GVJPA15V68E8ND0 | 🔍 observability
outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nextjs-webpack-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nextjs-webpack-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nitro-node (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nitro-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nuxt-node (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

nuxt-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

python-node (8 failed):

promiseAllWorkflow | wrun_41M14PWFB10GHR3B9EDEWY9WHX | 🔍 observability
sleepingWorkflow | wrun_41M14PX97R0GR6HEMMRBAP5NT0 | 🔍 observability
parallelSleepWorkflow | wrun_41M14PX9CG0GPGJ4R5WGR0CR5W | 🔍 observability
nullByteWorkflow | wrun_41M14PXEJ50GVP21SPK323AP3K | 🔍 observability
cancelRun - cancelling a running workflow | wrun_41M14Q517R0GZ497FB1CSWKP07 | 🔍 observability
cancelRun via CLI - cancelling a running workflow | wrun_41M14Q52HS0GRHYYW55JEMMJGB | 🔍 observability
sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_41M14Q5B3W0GXA5EB04XSYXNST | 🔍 observability
resilient start: addTenWorkflow completes when run_created returns 500 | wrun_41M14Q5XMX0GS5R4X4K8CAGM5M | 🔍 observability

sveltekit-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

sveltekit-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

tanstack-start-node (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

tanstack-start-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

vite-node (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

vite-quickjs (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR | 🔍 observability
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE | 🔍 observability
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q | 🔍 observability

vercel-http-transport (12 failed)

nextjs-turbopack (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q

vite (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q

vercel-multi-region (1 failed)

nextjs-turbopack (1 failed):

multi-region (world-vercel) cross-region stream visibility an sfo1 reader sees chunks of an IN-PROGRESS iad1 stream

vercel-ws-transport (23 failed)

example (5 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q

express (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q

nextjs-turbopack (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q

vite (6 failed):

outputStreamWorkflow no startIndex (reads all chunks)
outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_41M14Q1KB40GQB5642SFGVDVDR
utf8StreamWorkflow | wrun_41M14PYNE90GPEX43P9TM07TDH
AbortController abortExternalSignalInFlightWorkflow: external abort fires mid-flight, propagates to nested steps
distributedAbortController - manual abort triggers signal | wrun_41M14Q84KQ0GM322G3D5WQKJQE
distributedAbortController - TTL expiration triggers signal | wrun_41M14Q8CE00GPJ2YA1AZYCXH9Q

⚠️ 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.

10 flaky tests

abortAnyInStepWorkflow: AbortSignal.any inside a step composes deserialized signals (nextjs-turbopack)
abortFromStepWorkflow: step abort cancels an in-flight sibling step (vite)
abortParallelWorkflow: abort cancels all parallel steps (express)
abortParallelWorkflow: abort cancels all parallel steps (nextjs-webpack)
utf8StreamWorkflow (astro)
utf8StreamWorkflow (fastify)
utf8StreamWorkflow (hono)
webhookWorkflow (sveltekit)
webhookWorkflow (vite)
writableForwardedFromWorkflowWorkflow (example)

🛠 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 17:34:05Z · abandoned wrun_41M14PVHFA0GVETC790E6VD1CX · (+6 more)
run-pickup-stall · nullByteWorkflow (python) · at 17:34:24Z · abandoned wrun_41M14PZ6MC0GHTVVSRHCJMY1FP
run-pickup-stall · parallelSleepWorkflow (python) · at 17:34:24Z · abandoned wrun_41M14PZ6M90GRMPJXPSB8TFQ48
run-pickup-stall · promiseAllWorkflow (python) · at 17:34:25Z · abandoned wrun_41M14PZ6M10GPE4TGSWGAFEBBY
run-pickup-stall · cancelRun - cancelling a running workflow (python) · at 17:34:26Z · abandoned wrun_41M14PZ7QM0GJZZVJFJ3C2B6AS
run-pickup-stall · sleepingWorkflow (python) · at 17:34:31Z · abandoned wrun_41M14PZ6M90GRMPJXPSB8TFQ47
run-pickup-stall · cancelRun - cancelling a running workflow (python) · at 17:35:04Z · abandoned wrun_41M14Q0C6W0GS6245ZDV12E9X5
run-pickup-stall · nullByteWorkflow (python) · at 17:35:25Z · abandoned wrun_41M14Q130E0GZF4ZM7G1A01R9M
run-pickup-stall · parallelSleepWorkflow (python) · at 17:35:25Z · abandoned wrun_41M14Q12XG0GQRZA190S8VVV9E
run-pickup-stall · sleepingWorkflow (python) · at 17:35:26Z · abandoned wrun_41M14Q12Z80GGE7ZJ0MDZJ37GV
run-pickup-stall · promiseAllWorkflow (python) · at 17:35:27Z · abandoned wrun_41M14Q12M40GT164AP5E108JQ6
run-pickup-stall · cancelRun via CLI - cancelling a running workflow (python) · at 17:36:07Z · abandoned wrun_41M14Q1HJP0GHDS6QA3CF6P2XR
run-pickup-stall · cancelRun via CLI - cancelling a running workflow (python) · at 17:37:50Z · abandoned wrun_41M14Q49F80GW6QBR818BHB660
run-pickup-stall · sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration (python) · at 17:37:50Z · abandoned wrun_41M14Q36NS0GJ7ER5MSXCHC1XS

E2E Test Summary

Summary

	Passed	Failed	Skipped	Total
❌ ▲ Vercel Production	3431	147	742	4320
❌ vercel-http-transport	277	12	671	960
❌ vercel-multi-region	26	1	0	27
❌ vercel-ws-transport	530	23	87	640
Total	4264	183	1500	5947

Details by Category

❌ ▲ Vercel Production

App	Passed	Failed	Skipped
❌ astro-node	127	5	28
❌ astro-quickjs	127	5	28
❌ example-node	127	5	28
❌ example-quickjs	126	6	28
❌ express-node	126	6	28
❌ express-quickjs	127	5	28
❌ fastify-node	127	5	28
❌ fastify-quickjs	127	5	28
❌ hono-node	127	5	28
❌ hono-quickjs	127	5	28
❌ nest-node	126	6	28
❌ nest-quickjs	127	5	28
❌ nextjs-turbopack-node	151	6	3
❌ nextjs-turbopack-quickjs	150	7	3
❌ nextjs-webpack-node	152	5	3
❌ nextjs-webpack-quickjs	152	5	3
❌ nitro-node	126	6	28
❌ nitro-quickjs	127	5	28
❌ nuxt-node	126	6	28
❌ nuxt-quickjs	127	5	28
❌ python-node	0	8	152
❌ sveltekit-node	146	5	9
❌ sveltekit-quickjs	146	5	9
❌ tanstack-start-node	126	6	28
❌ tanstack-start-quickjs	127	5	28
❌ vite-node	127	5	28
❌ vite-quickjs	127	5	28

❌ vercel-http-transport

App	Passed	Failed	Skipped
✅ example	0	0	160
✅ express	0	0	160
✅ hono	0	0	160
❌ nextjs-turbopack	151	6	3
✅ nitro	0	0	160
❌ vite	126	6	28

❌ vercel-multi-region

App	Passed	Failed	Skipped
❌ nextjs-turbopack	26	1	0

❌ vercel-ws-transport

App	Passed	Failed	Skipped
❌ example	127	5	28
❌ express	126	6	28
❌ nextjs-turbopack	151	6	3
❌ vite	126	6	28

📋 View full workflow run

github-actions · 2026-08-27T21:22:32Z

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 · 2026-08-27T21:26:22Z

Framework	Flow route	Step reg.	Framework output
hono	200.9 KiB (±0)	40.4 KiB (±0)	1.76 MiB (+38 B)
nextjs-turbopack	206.3 KiB (±0)	439 B (±0)	763.7 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.

944aefe · run

…h331oseq3.vercel.sh

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

944aefe

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[test] workflow-server PR #897 - #3866

[test] workflow-server PR #897#3866
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🧪 E2E Test Results

❌ Failed E2E Tests

vercel-multi-region (1 failed)

⚠️ Flaky E2E Tests (passed on retry)

🛠 Infra Events (absorbed by the harness)

E2E Test Summary

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