fix(rivetkit): stop logging benign actor-sleep aborts at error level

[abcxff]

Description

Please include a summary of the changes and the related issue. Please also include relevant motivation and context.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[abcxff]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• chore(rivetkit-wasm): re-enable wasm build #5233
• fix(rivetkit): reap registered tasks and cancel abandoned waiters to stop workflow memory leaks #5232
• refactor(rivetkit): split workflow context into WorkflowContext + WorkflowStepContext #5231
• fix(rivetkit): stop logging benign actor-sleep aborts at error level #5211 👈 (View in Graphite)
• feat(rivetkit): move HTTP listener to Rust + RIVETKIT_RUNTIME_MODE env var #5132 : 1 other dependent PR (#5209 )
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[railway-app]

🚅 Deployed to the rivet-pr-5211 environment in rivet-frontend

Service	Status	Web	Updated (UTC)
kitchen-sink	❌ Build Failed (View Logs)	Web	Jun 14, 2026 at 3:20 am
website	😴 Sleeping (View Logs)	Web	Jun 9, 2026 at 5:47 pm
frontend-inspector	❌ Build Failed (View Logs)	Web	Jun 9, 2026 at 5:38 pm
ladle	❌ Build Failed (View Logs)	Web	Jun 9, 2026 at 5:33 pm
frontend-cloud	❌ Build Failed (View Logs)	Web	Jun 9, 2026 at 5:33 pm
mcp-hub	✅ Success (View Logs)	Web	Jun 9, 2026 at 5:32 pm

[claude]

Code Review

[abcxff]

Merge activity

• Jun 13, 12:31 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jun 13, 12:32 AM UTC: Graphite couldn't merge this pull request because a downstack PR feat(rivetkit): move HTTP listener to Rust + RIVETKIT_RUNTIME_MODE env var #5132 failed to merge.